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Galapagos Marine Iguana swims Puerto Egas, Santiago / San Salvador / James Island, Galápagos Islands, Ecuador

A Galapagos Marine Iguana (Amblyrhynchus cristatus) swims at Puerto Egas, which can be visited via a wet landing on Santiago (or San Salvador; or James Island), in the Galápagos Islands archipelago, a province of Ecuador, South America. The Marine Iguana is the world’s only sea-going lizard and is found only on the Galapagos Islands (spread throughout the archipelago). They feed almost exclusively on marine algae, expelling the excess salt from nasal glands while basking in the sun, coating their faces with white. Marine Iguanas live on the rocky shore or sometimes on mangrove beaches or marshes. Most adults are black, some grey, and the young have a lighter colored dorsal stripe. The somber tones allow the species to rapidly absorb the warm rays of the sun to minimize the period of lethargy after emerging from the frigid water, which is cooled by the Humboldt Current. Breeding-season adult males on the southern islands are the most colorful and will acquire reddish and teal-green colors, while Santa Cruz males are brick red and black, and Fernandina males are brick red and dull greenish. The iguanas living on the islands of Fernandina and Isabela (named for the famous rulers of Spain) are the largest found anywhere in the Galápagos. The smallest iguanas are found on Genovesa Island. Santiago is equivalent to Saint James in English; and its alternative name San Salvador refers to the island discovered by Columbus in the Caribbean Sea.

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ECUADOR: Galapagos Islands
A Galapagos Marine Iguana (Amblyrhynchus cristatus) swims at Puerto Egas, which can be visited via a wet landing on Santiago (or San Salvador; or James Island), in the Galápagos Islands archipelago, a province of Ecuador, South America. The Marine Iguana is the world’s only sea-going lizard and is found only on the Galapagos Islands (spread throughout the archipelago). They feed almost exclusively on marine algae, expelling the excess salt from nasal glands while basking in the sun, coating their faces with white. Marine Iguanas live on the rocky shore or sometimes on mangrove beaches or marshes. Most adults are black, some grey, and the young have a lighter colored dorsal stripe. The somber tones allow the species to rapidly absorb the warm rays of the sun to minimize the period of lethargy after emerging from the frigid water, which is cooled by the Humboldt Current. Breeding-season adult males on the southern islands are the most colorful and will acquire reddish and teal-green colors, while Santa Cruz males are brick red and black, and Fernandina males are brick red and dull greenish. The iguanas living on the islands of Fernandina and Isabela (named for the famous rulers of Spain) are the largest found anywhere in the Galápagos. The smallest iguanas are found on Genovesa Island. Santiago is equivalent to Saint James in English; and its alternative name San Salvador refers to the island discovered by Columbus in the Caribbean Sea.
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