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Designed for life in the sea, some species of penguins spend as much as 75% of their lives in the cold Antarctic water, coming out only to lay eggs and raise chicks. Heavy bones, flipper-shaped wings, streamlined body, paddle-like feet, insulating blubber, and watertight feathers all add to their efficiency and comfort underwater. This site features guided activities that show students how penguins have endured modifications to fit their habitat.
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