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Starfish / sea star, Seattle Aquarium, Washington, USA .

Starfish at the Seattle Aquarium, Washington. Starfish or sea stars are any echinoderms belonging to the class Asteroidea. The "star fish" usually hunt for shelled animals such as oysters and clams. They have two stomachs, one used for digestion, and the other stomach can be extended outward to engulf and digest prey much larger than its mouth. Most starfish have 5 arms, which can be regenerated if lost.

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Seattle Aquarium
Starfish at the Seattle Aquarium, Washington. Starfish or sea stars are any echinoderms belonging to the class Asteroidea. The "star fish" usually hunt for shelled animals such as oysters and clams. They have two stomachs, one used for digestion, and the other stomach can be extended outward to engulf and digest prey much larger than its mouth. Most starfish have 5 arms, which can be regenerated if lost.
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