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  • Ice ball encases branch.
    04ING-0003_Ice-ball-around-branch.jpg
  • Offshore from the Antarctic Peninsula, a Crabeater seal (Lobodon carcinophaga) rests sea ice floes which clog passage south to the Antarctic Circle in February, southern summer. A masted ship cruises through ghostly fog in the distance, a reminder of Shackleton's historic sailing of the Endurance expedition. Crabeater seals are the most numerous large species of mammal on Earth, after humans and cattle. Contrary to their name, Crabeater seals primarily eat krill, using  finely-lobed teeth adapted to filtering their tiny crustacean prey. In February 2005, the M/S Explorer carried us as far south as 65 degrees 41 minutes 67 seconds of South latitude before pack ice stopped progress 40 miles north of the Antarctic Circle. Every place south of the Antarctic Circle experiences a period of twenty-four hours continuous daylight (without sunset) at least once per year, and a period of twenty-four hours continuous night time at least once per year (without sunrise). This happens because the Earth's axis is tilted by about 23.5 degrees relative to ecliptic (the plane of the Earth's orbit around the sun). At the southern winter solstice, the southern hemisphere is tilted away from the Sun to its maximum extent, and the region of permanent darkness reaches its northern limit; at the southern summer solstice, the southern hemisphere is tilted towards the Sun to its maximum extent, and the region of permanent sunlight reaches its northern limit. As of 2012, the Antarctic Circle is the parallel of latitude that runs 66.5622 degrees (66 degrees 33 minutes 44 seconds) south of the Equator. The Antarctic Circle is slowly moving due to gradual changes in the tilt of the Earth's axis: the main long-term cycle causes axial tilt to fluctuate between about 22.1 degrees and 24.5 degrees with a period of 41,000 years.
    05ANT-20070-1484.jpg
  • Offshore from the Antarctic Peninsula, a Crabeater seal (Lobodon carcinophaga) rests sea ice floes which clog passage south to the Antarctic Circle in February, southern summer. Crabeater seals are the most numerous large species of mammal on Earth, after humans and cattle. Contrary to their name, Crabeater seals primarily eat krill, using  finely-lobed teeth adapted to filtering their tiny crustacean prey. In February 2005, the M/S Explorer carried us as far south as 65 degrees 41 minutes 67 seconds of South latitude before pack ice stopped progress 40 miles north of the Antarctic Circle. Every place south of the Antarctic Circle experiences a period of twenty-four hours continuous daylight (without sunset) at least once per year, and a period of twenty-four hours continuous night time at least once per year (without sunrise). This happens because the Earth's axis is tilted by about 23.5 degrees relative to ecliptic (the plane of the Earth's orbit around the sun). At the southern winter solstice, the southern hemisphere is tilted away from the Sun to its maximum extent, and the region of permanent darkness reaches its northern limit; at the southern summer solstice, the southern hemisphere is tilted towards the Sun to its maximum extent, and the region of permanent sunlight reaches its northern limit. As of 2012, the Antarctic Circle is the parallel of latitude that runs 66.5622 degrees (66 degrees 33 minutes 44 seconds) south of the Equator. The Antarctic Circle is slowly moving due to gradual changes in the tilt of the Earth's axis: the main long-term cycle causes axial tilt to fluctuate between about 22.1 degrees and 24.5 degrees with a period of 41,000 years.
    05ANT-20070-1472.jpg
  • Sea ice floes clog passage south to the Antarctic Circle in February, southern summer. In February 2005, the M/S Explorer carried us as far south as 65 degrees 41 minutes 67 seconds of South latitude before pack ice stopped progress 40 miles north of the Antarctic Circle. Every place south of the Antarctic Circle experiences a period of twenty-four hours continuous daylight (without sunset) at least once per year, and a period of twenty-four hours continuous night time at least once per year (without sunrise). This happens because the Earth's axis is tilted by about 23.5 degrees relative to ecliptic (the plane of the Earth's orbit around the sun). At the southern winter solstice, the southern hemisphere is tilted away from the Sun to its maximum extent, and the region of permanent darkness reaches its northern limit; at the southern summer solstice, the southern hemisphere is tilted towards the Sun to its maximum extent, and the region of permanent sunlight reaches its northern limit. As of 2012, the Antarctic Circle is the parallel of latitude that runs 66.5622 degrees (66 degrees 33 minutes 44 seconds) south of the Equator. The Antarctic Circle is slowly moving due to gradual changes in the tilt of the Earth's axis: the main long-term cycle causes axial tilt to fluctuate between about 22.1 degrees and 24.5 degrees with a period of 41,000 years.
    05ANT-20070-1470.jpg
  • The M/S Explorer cruises through sea ice in Antarctica in February 2005. The M/S Explorer sank after hitting an iceberg in 2007, and now lies sunk 600 meters deep in the Southern Ocean. Two and a half years after our successful trip, the Explorer, owned by Canadian travel company GAP Adventures, took on water after hitting ice at 12:24 AM EST on Friday November 23, 2007. 154 passengers and crew calmly climbed into lifeboats and drifted some six hours in calm waters. A Norwegian passenger boat rescued and took them to Chile's Antarctic Eduardo Frei base, where they were fed, clothed, checked by a doctor, and later flown to Punta Arenas, Chile. The ship sank hours after the passengers and crew were safely evacuated.
    05ANT-20070-1462.jpg
  • The M/S Explorer cruises through sea ice in Antarctica in February 2005. The M/S Explorer sank after hitting an iceberg in 2007, and now lies sunk 600 meters deep in the Southern Ocean. The Explorer, owned by Canadian travel company GAP Adventures, took on water after hitting ice at 12:24 AM EST on Friday November 23, 2007. 154 passengers and crew calmly climbed into lifeboats and drifted some six hours in calm waters. A Norwegian passenger boat rescued and took them to Chile's Antarctic Eduardo Frei base, where they were fed, clothed, checked by a doctor, and later flown to Punta Arenas, Chile. The ship sank hours after the passengers and crew were safely evacuated.
    05ANT-20063.jpg
  • Sea ice floes clog passage south to the Antarctic Circle in February, southern summer. In February 2005, the M/S Explorer carried us as far south as 65 degrees 41 minutes 67 seconds of South latitude before pack ice stopped progress 40 miles north of the Antarctic Circle. Every place south of the Antarctic Circle experiences a period of twenty-four hours continuous daylight (without sunset) at least once per year, and a period of twenty-four hours continuous night time at least once per year (without sunrise). This happens because the Earth's axis is tilted by about 23.5 degrees relative to ecliptic (the plane of the Earth's orbit around the sun). At the southern winter solstice, the southern hemisphere is tilted away from the Sun to its maximum extent, and the region of permanent darkness reaches its northern limit; at the southern summer solstice, the southern hemisphere is tilted towards the Sun to its maximum extent, and the region of permanent sunlight reaches its northern limit. As of 2012, the Antarctic Circle is the parallel of latitude that runs 66.5622 degrees (66 degrees 33 minutes 44 seconds) south of the Equator. The Antarctic Circle is slowly moving due to gradual changes in the tilt of the Earth's axis: the main long-term cycle causes axial tilt to fluctuate between about 22.1 degrees and 24.5 degrees with a period of 41,000 years.
    05ANT-20070-1476.jpg
  • Offshore from the Antarctic Peninsula, a Crabeater seal (Lobodon carcinophaga) rests sea ice floes which clog passage south to the Antarctic Circle in February, southern summer. Crabeater seals are the most numerous large species of mammal on Earth, after humans and cattle. Contrary to their name, Crabeater seals primarily eat krill, using  finely-lobed teeth adapted to filtering their tiny crustacean prey. In February 2005, the M/S Explorer carried us as far south as 65 degrees 41 minutes 67 seconds of South latitude before pack ice stopped progress 40 miles north of the Antarctic Circle. Every place south of the Antarctic Circle experiences a period of twenty-four hours continuous daylight (without sunset) at least once per year, and a period of twenty-four hours continuous night time at least once per year (without sunrise). This happens because the Earth's axis is tilted by about 23.5 degrees relative to ecliptic (the plane of the Earth's orbit around the sun). At the southern winter solstice, the southern hemisphere is tilted away from the Sun to its maximum extent, and the region of permanent darkness reaches its northern limit; at the southern summer solstice, the southern hemisphere is tilted towards the Sun to its maximum extent, and the region of permanent sunlight reaches its northern limit. As of 2012, the Antarctic Circle is the parallel of latitude that runs 66.5622 degrees (66 degrees 33 minutes 44 seconds) south of the Equator. The Antarctic Circle is slowly moving due to gradual changes in the tilt of the Earth's axis: the main long-term cycle causes axial tilt to fluctuate between about 22.1 degrees and 24.5 degrees with a period of 41,000 years.
    05ANT-20070-1473.jpg
  • The M/S Explorer cruises through sea ice in Antarctica in February 2005. The M/S Explorer sank after hitting an iceberg in 2007, and now lies sunk 600 meters deep in the Southern Ocean. The Explorer, owned by Canadian travel company GAP Adventures, took on water after hitting ice at 12:24 AM EST on Friday November 23, 2007. 154 passengers and crew calmly climbed into lifeboats and drifted some six hours in calm waters. A Norwegian passenger boat rescued and took them to Chile's Antarctic Eduardo Frei base, where they were fed, clothed, checked by a doctor, and later flown to Punta Arenas, Chile. The ship sank hours after the passengers and crew were safely evacuated.
    05ANT-20070-1459.jpg
  • Rime ice on leaves at Gunsight Pass, Glacier National Park, Montana, USA
    2209RV-0401.jpg
  • The M/S Explorer cruises through sea ice in Antarctica in February 2005. A nautical navigation instrument helps guide the ship. The M/S Explorer sank after hitting an iceberg in 2007, and now lies sunk 600 meters deep in the Southern Ocean. Two and a half years after our successful trip, the Explorer, owned by Canadian travel company GAP Adventures, took on water after hitting ice at 12:24 AM EST on Friday November 23, 2007. 154 passengers and crew calmly climbed into lifeboats and drifted some six hours in calm waters. A Norwegian passenger boat rescued and took them to Chile's Antarctic Eduardo Frei base, where they were fed, clothed, checked by a doctor, and later flown to Punta Arenas, Chile. The ship sank hours after the passengers and crew were safely evacuated.
    05ANT-20070-1465.jpg
  • Hikers are rewarded with a spectacular ice bowl at Crucible Lake (1172 meters or 3844 feet elevation). Crucible Lake still floats big ice bergs in late summer, in Mount Aspiring National Park, Southern Alps, South Island, New Zealand. Hiking to Crucible Lake takes at least 8 hours round trip (10 hours with my photography), from Siberia Hut, on a very steep and rooty trail (2300 feet or 700 meters vertical gain). In 1990, UNESCO honored Te Wahipounamu - South West New Zealand as a World Heritage Area. Published in "Light Travel: Photography on the Go" book by Tom Dempsey 2009, 2010. Panorama stitched from 2 overlapping photos.
    07NZ_1007-08pan_Crucible-Lake_flower...jpg
  • Rime ice on pine needles at Gunsight Pass, Glacier National Park, Montana, USA
    2209RV-0404.jpg
  • Rainbow over Grey Glacier, Southern Patagonian Ice Field, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5429.jpg
  • Ice still floats in Frozen Lake in mid July in Mountain Rainier National Park, Washington, USA. From Sunrise, we hiked 7.5 miles with 1440 feet cumulative gain to Skyscraper Pass.
    2107WA-054.jpg
  • Grey Glacier, Southern Patagonian Ice Field, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5729.jpg
  • Nothofagus trees have been permanently bent by Patagonian winds at a viewpoint for Grey Glacier, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Originating in the vast Southern Patagonian Ice Field, the Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO. This image was stitched from multiple overlapping photos.
    2002PAT-5300-12-Pano.jpg
  • Icebergs from the Southern Patagonian Ice Field float on Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5178.jpg
  • Icebergs from the Southern Patagonian Ice Field float on Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO. This image was stitched from multiple overlapping photos.
    2002PAT-5165-67-Pano.jpg
  • An iceberg from the Southern Patagonian Ice Field via Grey Glacier melts on Lago Grey in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5141.jpg
  • An iceberg from the Southern Patagonian Ice Field via Grey Glacier melts on Lago Grey in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5129.jpg
  • Jumbled seracs of Grey Glacier  flow from the Southern Patagonian Ice Field into Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5003.jpg
  • Jumbled seracs of Grey Glacier  flow from the Southern Patagonian Ice Field into Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-4938.jpg
  • Jumbled seracs of Grey Glacier  flow from the Southern Patagonian Ice Field into Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-4916.jpg
  • Jumbled seracs of Grey Glacier  flow from the Southern Patagonian Ice Field into Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-4934.jpg
  • An iceberg from the Southern Patagonian Ice Field via Grey Glacier melts on Lago Grey in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-4848.jpg
  • Ice partially covers an unnamed lake below Paso Quadrado, near El Chalten, Santa Cruz Province, Argentina, Patagonia, South America. The snowy peak of Cerro Gorra Blanca and conjoined Cerro Neumayer rise behind the ridge of Cerro 30 Aniversario. Initially, we hiked the scenic Rio Electrico Valley to Refugio Piedra del Fraile ("Stone of the Friar", 14.5 km round trip) for an overnight stay in a 4-person dorm room supplied with pads. From the refuge, a path ascends very steeply to Paso Quadrado (gaining 1340 m vertically in 8.4 km round trip) for a spectacular view south. We ascended glacier-carved orange rocks to reach Paso Quadrado. The last kilometer climbs up steep snow which could require crampons if icy. Views keep improving the higher you go.
    2002PAT-4236.jpg
  • A remote, glaciated peak (8720 ft elevation in Chile) rises from the South Patagonian Ice Cap, 17 miles northwest of Piedra Negra (a climbers' basecamp above Rio Electrico Valley, near El Chalten, Santa Cruz Province, Argentina, Patagonia, South America). We hiked the scenic Rio Electrico Valley to Refugio Piedra del Fraile ("Stone of the Friar", 14.5 km round trip). From the refuge, a path ascends very steeply to Paso Quadrado (gaining 1340 m vertically in 8.4 km round trip). Views keep improving the higher you go.
    2002PAT-4144.jpg
  • Ice patterns along Maroon Creek, in Maroon Bells-Snowmass Wilderness of White River National Forest, near Aspen, Colorado, USA.
    1709US2-186.jpg
  • Ice calves into a snow avalanche, in Upper Lauterbrunnen Valley, in the canton of Bern, Switzerland, Europe. We loved hiking to the quiet retreat of Berghotel Obersteinberg, which offers tremendous views of waterfalls and peaks in Upper Lauterbrunnen Valley. Lit by candle light at night, this romantic escape built in the 1880s recalls an earlier era without power. The main luxuries here are flush toilets down the hall, and traditional Swiss hot meals. The private double rooms lack electricity, and bowls of water serve as bath and sink. Obersteinberg is a 2-hour walk from Stechelberg, or 4 hours from Mürren, in one of the world's most spectacular glaciated valleys. From Obersteinberg, don't miss the 2-3 hours round trip to the deep-blue tarn of Oberhornsee in the upper glacial basin, beneath snowcapped Grosshorn, Breithorn and Tschingelhorn. The Swiss Alps Jungfrau-Aletsch region is honored as a UNESCO World Heritage Site.
    16SWI-4457.jpg
  • Glacier ice forms an arch on an Antarctic Island.
    05ANT-20162.jpg
  • Sea ice floes drift by an Antarctic island.
    05ANT-20070.jpg
  • The M/S Explorer cruises in Antarctica in February 2005. Reuters News Pictures Service published this image in stories on the M/S Explorer, which sank after hitting an iceberg in 2007 and now lies sunk 600 meters deep in the Southern Ocean. Two and a half years after our successful trip, the Explorer, owned by Canadian travel company GAP Adventures, took on water after hitting ice at 12:24 AM EST on Friday November 23, 2007. 154 passengers and crew calmly climbed into lifeboats and drifted some six hours in calm waters. A Norwegian passenger boat rescued and took them to Chile's Antarctic Eduardo Frei base, where they were fed, clothed, checked by a doctor, and later flown to Punta Arenas, Chile. The ship sank hours after the passengers and crew were safely evacuated. Published in "Light Travel: Photography on the Go" by Tom Dempsey 2009, 2010.
    05ANT-20059-1354.jpg
  • Tom Dempsey views sea ice in the Southern Ocean offshore from tidewater glaciers on Graham Land, the north part of the Antarctic Peninsula, in Antarctica. For licensing options, please inquire.
    05ANT-20054.jpg
  • Crabeater seals (Lobodon carcinophaga) rest on an ice floe in Antarctica. Ecotourists in a Zodiac boat cruise nearby. Crabeater seals are the most numerous large species of mammal on Earth, after humans and cattle. Contrary to their name, Crabeater seals primarily eat krill, using  finely-lobed teeth adapted to filtering their tiny crustacean prey. Published in Wilderness Travel Antarctica Brochure 2009, 2010.
    05ANT-11053_Crabeater-seals.jpg
  • Crabeater seals (Lobodon carcinophaga) rest on an ice floe in Antarctica. Crabeater seals are the most numerous large species of mammal on Earth, after humans and cattle. Contrary to their name, Crabeater seals primarily eat krill, using  finely-lobed teeth adapted to filtering their tiny crustacean prey.
    05ANT-11051_Crabeater-seals_Lobodon-...jpg
  • See the Northern Patagonian Ice Field across General Carrera Lake, northeast of Puerto Guadal, Chile, South America. The glacially carved lake is surrounded by the Andes mountain range and drains to the Pacific Ocean on the west through the Baker River. The coast of the lake was first inhabited by criollos and European immigrants between 1900 and 1925. In 1971 and 1991, eruptions of the Hudson Volcano severely affected the local economy, especially that of sheep farming.
    2002PAT-0621.jpg
  • Trekkers admire the vast Grey Glacier in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Originating in the vast Southern Patagonian Ice Field, the Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO. This image was stitched from multiple overlapping photos.
    2002PAT-5579-Pano.jpg
  • Crevasses in Grey Glacier, Southern Patagonian Ice Field, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5577.jpg
  • Rainbow over Grey Glacier, Southern Patagonian Ice Field, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5491.jpg
  • Crevasses in Grey Glacier, Southern Patagonian Ice Field, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5454.jpg
  • Icebergs from the Southern Patagonian Ice Field float on Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5138.jpg
  • An iceberg from the Southern Patagonian Ice Field via Grey Glacier melts on Lago Grey in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5126.jpg
  • An iceberg from the Southern Patagonian Ice Field via Grey Glacier melts on Lago Grey in Torres del Paine National Park, Chile, Patagonia, South America. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5038.jpg
  • Grey Glacier, Southern Patagonian Ice Field, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO. This image was stitched from multiple overlapping photos.
    2002PAT-4968-71-Pano.jpg
  • Jumbled seracs of Grey Glacier  flow from the Southern Patagonian Ice Field into Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5012.jpg
  • Jumbled seracs of Grey Glacier  flow from the Southern Patagonian Ice Field into Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-5008.jpg
  • Jumbled seracs of Grey Glacier  flow from the Southern Patagonian Ice Field into Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-4965.jpg
  • Grey Glacier, Southern Patagonian Ice Field, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-4879.jpg
  • Grey Glacier flows from the Southern Patagonian Ice Field, as seen from Hosteria Lago Grey, in Torres del Paine National Park, Chile, Patagonia, South America. Before dividing in two at its tongue, the glacier is 6 kilometers wide and over 30 meters high. Grey Glacier has receded 4 km and lost 17 square kilometers from the mid 1900s through 2010.  Torres del Paine National Park is listed as a World Biosphere Reserve by UNESCO.
    2002PAT-4788.jpg
  • Ice encapsulated grass. Maroon-Snowmass Trail #1975, White River National Forest, near Aspen, Colorado, USA.
    1709US1-0382.jpg
  • Creek ice formations. Maroon-Snowmass Trail #1975, White River National Forest, near Aspen, Colorado, USA.
    1709US1-0348.jpg
  • Ice on branches, Lower Emerald Pool waterfall, Zion National Park, Springdale, Utah, USA. The North Fork of the Virgin River carved spectacular Zion Canyon through reddish and tan-colored Navajo Sandstone up to half a mile (800 m) deep and 15 miles (24 km) long. Uplift associated with the creation of the Colorado Plateaus lifted the region 10,000 feet (3000 m) starting 13 million years ago. Zion and Kolob canyon geology includes 9 formations covering 150 million years of mostly Mesozoic-aged sedimentation, from warm, shallow seas, streams, lakes, vast deserts, and dry near-shore environments. Mormons discovered the canyon in 1858 and settled in the early 1860s. U.S. President Taft declared it Mukuntuweap National Monument in 1909. In 1918, the name changed to Zion (an ancient Hebrew name for Jerusalem), which became a National Park in 1919. The Kolob section (a 1937 National Monument) was added to Zion National Park in 1956. Unusually diverse plants and animals congregate here where the Colorado Plateau, Great Basin, and Mojave Desert meet.
    1303UT-1186.jpg
  • Glacier capped mountains rise above sea ice on the Antarctic Peninsula. Published by W.W. Norton Publishers as a full page chapter opener in the textbook "Discover Biology 5e" by Cain et al 2012, plus ebook, DVD, and web; and in "Discover Biology 6e" by Singh-Cundy & Shin 2014.
    05ANT-20062.jpg
  • A hardy yellow sailboat anchors amid sea ice at Vernadsky Research Base (Akademik Vernadsky), a Ukrainian Antarctic Station at Marina Point on Galindez Island in the Argentine Islands, Antarctica. The United Kingdom first established research here as Base F or "Argentine Islands" on Winter Island in 1947, then built a larger hut on Galindez Island in 1954, renamed it Faraday Station in 1977, and shocked the scientific community by discovering the Antarctic "ozone hole" in 1985. The base was transferred to Ukraine in 1996.
    05ANT-20059-1361.jpg
  • Sea ice floats in the Southern Ocean offshore from tidewater glaciers on Graham Land, the north part of the Antarctic Peninsula, in Antarctica. See a vast frozen wilderness from the railing of an Antarctic cruise ship.
    05ANT-20058.jpg
  • In sunny weather, Carol Dempsey views sea ice in the Southern Ocean offshore from Graham Land, the north part of the Antarctic Peninsula, in Antarctica. For licensing options, please inquire.
    05ANT-20052.jpg
  • Wind-driven ice blocks our Zodiac boat, requiring pushing to free our path in the Southern Ocean offshore from Graham Land, the north part of the Antarctic Peninsula, Antarctica. One could easily get stuck for hours under difficult conditions.
    05ANT-20043.jpg
  • Ice tumbles from tidewater Cascade Glacier into Prince William Sound, Alaska, USA. Prince William Sound is surrounded by Chugach National Forest (the second largest national forest in the USA). Tour spectacular Prince William Sound by commercial boat from Whittier, which sits strategically on Kenai Peninsula at the head of Passage Canal. Whittier is a port for the Alaska Marine Highway System, a ferry service which operates along the south-central coast, eastern Aleutian Islands, and the Inside Passage of Alaska and British Columbia, Canada. Cruise ships stop at the port of Whittier for passenger connections to Anchorage (by road 60 miles) and to the interior of Alaska via highway and rail (the Denali Express). Known by locals as the Whittier tunnel or the Portage tunnel, the Anton Anderson Memorial Tunnel links Whittier via Portage Glacier Highway to the Seward Highway and Anchorage. At 13,300 feet long (4050 m), it is the longest combined rail and highway tunnel in North America. Whittier was severely damaged by tsunamis triggered by the 1964 Good Friday Earthquake, when thirteen people died from waves reaching 43 feet high (13 meters).
    06AK_2083.jpg
  • Spegazzini Glacier squeezes ice into a mound of blue seracs. On Lake Argentino in Los Glaciares National Park, we enjoyed the Glaciers Gourmet Full Day Sightseeing Cruise on board the 'Maria Turquesa' in Santa Cruz Province, Argentina, Patagonia, South America. Los Glaciares National Park is honored on UNESCO's World Heritage List.
    2002PAT-1988.jpg
  • Aerial view of Mount Alba (2360 meters elevation) and the ice filled bowl of Crucible Lake in the Southern Alps, South Island, New Zealand. A terminal moraine dams the cirque which was carved by glaciers. In 1990, UNESCO honored Te Wahipounamu - South West New Zealand as a World Heritage Area.
    07NZ_0196_Mt-Alba-2360m.jpg
  • Ice and icicles on a side stream in the Dudh Koshi river valley (or Dudh Kosi) on the trail to Gokyo, in Sagarmatha National Park, in the Himalaya of eastern Nepal. Sagarmatha National Park was created in 1976 and honored as a UNESCO World Heritage Site in 1979.
    07NEP-4624.jpg
  • Ice and icicles on a side stream in the Dudh Koshi river valley (or Dudh Kosi) on the trail to Gokyo, in Sagarmatha National Park, in the Himalaya of eastern Nepal. Sagarmatha National Park was created in 1976 and honored as a UNESCO World Heritage Site in 1979.
    07NEP-4143.jpg
  • The sharp peak of Gandharba Chuli (20,500 feet / 6248 meters), with fluted ice ridges, in the Annapurna Range of Nepal, seen from the Annapurna Sanctuary.
    07NEP-2430.jpg
  • Wind coats grass blades with sheets of ice and rime on a frosty morning. Obstruction Point Road, Hurricane Ridge, Olympic National Park, Jefferson County, Washington, USA.
    0910HUR-097.jpg
  • ice patterns frozen over moss in Mount Baker Wilderness, Washington, USA
    0810CHA-119.jpg
  • ice patterns frozen over moss in Mount Baker Wilderness, Washington, USA
    0810CHA-117.jpg
  • Frost heaves grow on a freezing morning on the Chain Lakes Loop Trail, in Mount Baker Snoqualmie National Forest, Washington, USA, forming towers of ice one to three inches high.
    0810CHA-029.jpg
  • Ice covers most of Goat Lake in late July, in Goat Rocks Wilderness Area. Hike this scenic loop to Snowgrass Flat and Goat Ridge (13 miles, with 3180 feet total gain) in Gifford Pinchot National Forest, Washington, USA.
    0607GOA_0887-888panB-Goat-Lake.jpg
  • A mountain guide from Robinson Expeditions escorts a client with rope and ice axe across a steep snow gully on a traverse of Mount Smolikas, second highest mountain in Greece. Hike the North Pindus Mountains (Pindos or Pindhos) around Zagoria, Epirus/Epiros, Greece, Europe. Zagori (Greek: ) is a region and a municipality in the Pindus mountains in Epirus, in northwestern Greece. Zagori contains 45 villages collectively known as Zagoria (Zagorochoria or Zagorohoria). Published in "Pindos: The National Park" (2010) by Alexander G. Tziolas, preface by Tom Dempsey et al, ISBN 978-960-98795-3-8.
    01GRE-40-17_mountaineers-roped_Pindu...jpg
  • ice patterns frozen over moss in Mount Baker Wilderness, Washington, USA
    0810CHA-118.jpg
  • Frost heaves grow on a freezing morning on the Chain Lakes Loop Trail, in Mount Baker Snoqualmie National Forest, Washington, USA, forming towers of ice one to three inches high.
    0810CHA-005.jpg
  • Beneath Phoenix Peak, Exit Glacier flows from the Harding Icefield in the Kenai Mountains of Alaska, USA. The only road into Kenai Fjords National Park is a spur of the Seward Highway to Exit Glacier, one of the most visited glaciers in Alaska. It was named after the exit of the first recorded crossing of Harding Icefield in 1968. Hike trails to the glacier terminus or up to Harding Icefield. From 1815-1999, the Exit Glacier in Alaska retreated 6549 feet, melting an average of 35 feet per year (according to www.nps.gov/kefj/). Over the past 50 years, Alaska’s winters have warmed by 6.3°F (3.5°C) and its annual average temperature has increased 3.4°F (2.0°C) (Karl et al. 2009). Alaska has warmed more than twice as fast as the continental United States. Since the industrial revolution began, humans have increased atmospheric carbon dioxide concentration by 35% through burning fossil fuels, deforesting land, and grazing livestock. An overwhelming consensus of climate scientists agree that global warming is indeed happening and humans are contributing to it through emission of greenhouse gases (primarily carbon dioxide). The UN Intergovernmental Panel on Climate Change (IPCC, 2007) says "Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice and rising global average sea level. There is very high confidence that the net effect of human activities since 1750 has been one of warming."
    02AK-04-32_Exit-Glacier-ice-Phoenix-...jpg
  • Visit Perito Moreno Glacier in Los Glaciares National Park as a day trip from El Calafate, in southwest Santa Cruz province, Argentina. Easy boardwalks give wide views of Moreno Glacier, an impressive wall of ice 200 feet high and 3 miles (5 km) wide flowing into Lake Argentina. The glacier flows up to 2300 feet thick and originates in the huge Hielo Sur (Southern Icefield) in the southern Andes mountains. For the past 90 years, its advancing has equaled melting (up to 2 meters per day, 700 meters per year), and the terminus has stayed at one location. Flowing ice periodically dams an arm of the lake which rises for a few years then breaks across the nose of the glacier as a crashing river (in March 2004 and 1991). In this 2005 photo, a narrow river flowed across the glacier face which calved large chunks of ice into the water with a loud crash several times per day. The foot of South America is known as Patagonia, a name derived from coastal giants, Patagão or Patagoni, who were reported by Magellan's 1520s voyage circumnavigating the world and were actually Tehuelche native people who averaged 25 cm (or 10 inches) taller than the Spaniards. Panorama stitched from 2 overlapping photos. Published in Wilderness Travel 2015 Catalog of Adventures.
    05ARG-40092-93pan_Moreno-Glacier.jpg
  • Visit popular Perito Moreno Glacier in Los Glaciares National Park as a day trip from El Calafate, in southwest Santa Cruz province, Argentina. Easy boardwalks give wide views of Moreno Glacier, an impressive wall of ice 200 feet high and 3 miles (5 km) wide flowing into Lake Argentina. The glacier flows up to 2300 feet thick and originates in the huge Hielo Sur (Southern Icefield) in the southern Andes mountains. For the past 90 years, its advancing has equaled melting (up to 2 meters per day, 700 meters per year), and the terminus has stayed at this location. Flowing ice periodically dams an arm of the lake which rises for a few years then breaks across the nose of the glacier as a crashing river (in March 2004 and 1991). In this 2005 photo, a narrow river flowed across the glacier face which calved large chunks of ice into the water with a loud crash several times per day. The foot of South America is known as Patagonia, a name derived from coastal giants, Patagão or Patagoni, who were reported by Magellan's 1520s voyage circumnavigating the world and were actually Tehuelche native people who averaged 25 cm (or 10 inches) taller than the Spaniards. Panorama stitched from 2 images. Published in "Light Travel: Photography on the Go" by Tom Dempsey 2009, 2010.
    05ARG-40094.jpg
  • Visit Perito Moreno Glacier in Los Glaciares National Park as a day trip from El Calafate, in southwest Santa Cruz province, Argentina. Easy boardwalks give wide views of Moreno Glacier, an impressive wall of ice 200 feet high and 3 miles (5 km) wide flowing into Lake Argentina. The glacier flows up to 2300 feet thick and originates in the huge Hielo Sur (Southern Icefield) in the southern Andes mountains. For the past 90 years, its advancing has equaled melting (up to 2 meters per day, 700 meters per year), and the terminus has stayed at one location. Flowing ice periodically dams an arm of the lake which rises for a few years then breaks across the nose of the glacier as a crashing river (in March 2004 and 1991). In this 2005 photo, a narrow river flowed across the glacier face which calved large chunks of ice into the water with a loud crash several times per day. The foot of South America is known as Patagonia, a name derived from coastal giants, Patagão or Patagoni, who were reported by Magellan's 1520s voyage circumnavigating the world and were actually Tehuelche native people who averaged 25 cm (or 10 inches) taller than the Spaniards. Panorama stitched from 3 overlapping photos.
    05ARG-40086-88pan_Moreno-Glacier.jpg
  • Visit Perito Moreno Glacier in Los Glaciares National Park as a day trip from El Calafate, in southwest Santa Cruz province, Argentina. Easy boardwalks give wide views of Moreno Glacier, an impressive wall of ice 200 feet high and 3 miles (5 km) wide flowing into Lake Argentina. The glacier flows up to 2300 feet thick and originates in the huge Hielo Sur (Southern Icefield) in the southern Andes mountains. For the past 90 years, its advancing has equaled melting (up to 2 meters per day, 700 meters per year), and the terminus has stayed at one location. Flowing ice periodically dams an arm of the lake which rises for a few years then breaks across the nose of the glacier as a crashing river (in March 2004 and 1991). In this 2005 photo, a narrow river flowed across the glacier face which calved large chunks of ice into the water with a loud crash several times per day. The foot of South America is known as Patagonia, a name derived from coastal giants, Patagão or Patagoni, who were reported by Magellan's 1520s voyage circumnavigating the world and were actually Tehuelche native people who averaged 25 cm (or 10 inches) taller than the Spaniards.
    05ARG-40064.jpg
  • Visit Perito Moreno Glacier in Los Glaciares National Park as a day trip from El Calafate, in southwest Santa Cruz province, Argentina. Easy boardwalks give wide views of Moreno Glacier, an impressive wall of ice 200 feet high and 3 miles (5 km) wide flowing into Lake Argentina. The glacier flows up to 2300 feet thick and originates in the huge Hielo Sur (Southern Icefield) in the southern Andes mountains. For the past 90 years, its advancing has equaled melting (up to 2 meters per day, 700 meters per year), and the terminus has stayed at one location. Flowing ice periodically dams an arm of the lake which rises for a few years then breaks across the nose of the glacier as a crashing river (in March 2004 and 1991). In this 2005 photo, a narrow river flowed across the glacier face which calved large chunks of ice into the water with a loud crash several times per day. The foot of South America is known as Patagonia, a name derived from coastal giants, Patagão or Patagoni, who were reported by Magellan's 1520s voyage circumnavigating the world and were actually Tehuelche native people who averaged 25 cm (or 10 inches) taller than the Spaniards.
    05ARG-40069.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area. This image was stitched from multiple overlapping photos.
    1901NZ1-3998-4017-Pano.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area. This image was stitched from multiple overlapping photos.
    1901NZ1-3994-97-Pano.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-3968.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-3943.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-3844.jpg
  • The leopard seal (Hydrurga leptonyx), also referred to as the sea leopard, is the second largest species of seal in the Antarctic region. It is most common in the southern hemisphere along the coast of Antarctica and on most sub-Antarctic islands, but can also be found on the coasts of southern Australia, Tasmania, South Africa, New Zealand, Lord Howe Island, Tierra del Fuego, the Cook Islands, and the Atlantic coast of South America. Along with all of the other earless seals, it belongs to the family Phocidae, and is the only species in the genus Hydrurga. The name hydrurga means "water worker" and leptonyx is the Greek for "small clawed". The leopard seal is large and muscular, with a dark grey back and light grey on its stomach. Its throat is whitish with the black spots that give the seal its common name.
    05ANT-20035.jpg
  • The leopard seal (Hydrurga leptonyx), also referred to as the sea leopard, is the second largest species of seal in the Antarctic region. It is most common in the southern hemisphere along the coast of Antarctica and on most sub-Antarctic islands, but can also be found on the coasts of southern Australia, Tasmania, South Africa, New Zealand, Lord Howe Island, Tierra del Fuego, the Cook Islands, and the Atlantic coast of South America. Along with all of the other earless seals, it belongs to the family Phocidae, and is the only species in the genus Hydrurga. The name hydrurga means "water worker" and leptonyx is the Greek for "small clawed". The leopard seal is large and muscular, with a dark grey back and light grey on its stomach. Its throat is whitish with the black spots that give the seal its common name.
    05ANT-20031.jpg
  • The leopard seal (Hydrurga leptonyx), also referred to as the sea leopard, is the second largest species of seal in the Antarctic region. It is most common in the southern hemisphere along the coast of Antarctica and on most sub-Antarctic islands, but can also be found on the coasts of southern Australia, Tasmania, South Africa, New Zealand, Lord Howe Island, Tierra del Fuego, the Cook Islands, and the Atlantic coast of South America. Along with all of the other earless seals, it belongs to the family Phocidae, and is the only species in the genus Hydrurga. The name hydrurga means "water worker" and leptonyx is the Greek for "small clawed". The leopard seal is large and muscular, with a dark grey back and light grey on its stomach. Its throat is whitish with the black spots that give the seal its common name.
    05ANT-11086.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-4052.jpg
  • Yellow flowers blooming at ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area. This image was stitched from multiple overlapping photos.
    1901NZ1-4020-21-Pano.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-3946.jpg
  • Stoat & rat trap beside ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-3913.jpg
  • Ice-filled Crucible Lake in summer in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-3839.jpg
  • Gloves on toes at ice-filled Crucible Lake in Mount Aspiring National Park, Southern Alps, Otago region, South Island of New Zealand. Beginning in the Siberia Valley, the Crucible Lake Track departs from the Gillespie Pass Circuit about an hour above the Siberia Hut. UNESCO lists Mount Aspiring as part of Wahipounamu - South West New Zealand World Heritage Area.
    1901NZ1-3830.jpg
  • The leopard seal (Hydrurga leptonyx), also referred to as the sea leopard, is the second largest species of seal in the Antarctic region. It is most common in the southern hemisphere along the coast of Antarctica and on most sub-Antarctic islands, but can also be found on the coasts of southern Australia, Tasmania, South Africa, New Zealand, Lord Howe Island, Tierra del Fuego, the Cook Islands, and the Atlantic coast of South America. Along with all of the other earless seals, it belongs to the family Phocidae, and is the only species in the genus Hydrurga. The name hydrurga means "water worker" and leptonyx is the Greek for "small clawed". The leopard seal is large and muscular, with a dark grey back and light grey on its stomach. Its throat is whitish with the black spots that give the seal its common name.
    05ANT-20040.jpg
  • Waves carve an arch from a blue iceberg in the Southern Ocean offshore from Graham Land, the north part of the Antarctic Peninsula, Antarctica.
    05ANT-20027.jpg
  • The leopard seal (Hydrurga leptonyx), also referred to as the sea leopard, is the second largest species of seal in the Antarctic region. It is most common in the southern hemisphere along the coast of Antarctica and on most sub-Antarctic islands, but can also be found on the coasts of southern Australia, Tasmania, South Africa, New Zealand, Lord Howe Island, Tierra del Fuego, the Cook Islands, and the Atlantic coast of South America. Along with all of the other earless seals, it belongs to the family Phocidae, and is the only species in the genus Hydrurga. The name hydrurga means "water worker" and leptonyx is the Greek for "small clawed". The leopard seal is large and muscular, with a dark grey back and light grey on its stomach. Its throat is whitish with the black spots that give the seal its common name.
    05ANT-11092.jpg
  • Delicate frost heaves crystalize a couple of inches high on a freezing morning in Heather Meadows on the Chain Lakes Loop Trail, in Mount Baker Snoqualmie National Forest, Washington, USA, forming towers of ice one to three inches high.
    0810CHA-011.jpg
  • Delicate frost heaves crystalize a couple of inches high on a freezing morning in Heather Meadows on the Chain Lakes Loop Trail, in Mount Baker Snoqualmie National Forest, Washington, USA, forming towers of ice one to three inches high.
    0810CHA-010.jpg
  • Delicate frost heaves crystalize a couple of inches high on a freezing morning in Heather Meadows on the Chain Lakes Loop Trail, in Mount Baker Snoqualmie National Forest, Washington, USA, forming towers of ice one to three inches high.
    0810CHA-008.jpg
  • Delicate frost heaves crystalize a couple of inches high on a freezing morning in Heather Meadows on the Chain Lakes Loop Trail, in Mount Baker Snoqualmie National Forest, Washington, USA, forming towers of ice one to three inches high.
    0810CHA-006.jpg
  • Perito Moreno Glacier's loud cracks, groans, and calvings captivated us for hours from intimate viewing platforms on Lake Argentino, in Santa Cruz Province, Argentina, Patagonia, South America. The spectacular Perito Moreno Glacier is one of 48 glaciers fed by the Southern Patagonian Ice Field (the world's third largest reserve of fresh water). Moreno Glacier melts into Lake Argentino, surrounded by Los Glaciares National Park. Lago Argentino is the biggest freshwater lake in Argentina and reaches as deep as 500 meters (1640 feet). Its outlet, the Santa Cruz River, flows into the Atlantic Ocean. Despite most glaciers worldwide retreating due to global warming, Perito Moreno Glacier has been a relatively stable exception for the past hundred years. Located 78 kilometers (48 mi) from El Calafate, the glacier was named after explorer Francisco Moreno, a pioneer who studied the region in the 1800s and defended the territory of Argentina in the conflict surrounding the international border dispute with Chile. Los Glaciares National Park is honored on UNESCO's World Heritage List.
    2002PAT-1816.jpg
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