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Two nurse sharks hover over a baited cage
Lesson Plan

Tale of a Whale

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Sea lions generate thrust, or forward propulsion, by bringing their fore-flippers together in big sweeping motions called “claps.”  When a sea lion “claps,” it stretches its flippers out to the sides and sweeps them down. Then it tucks its flippe
Article

How Do Sea Lions Swim?

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An artist sketches the preserved bones of a specimen in the Smithsonian's collection.
Photo

Flippers, Jawbones, and Blowholes: Marine Specimens Inspire Artists

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Listen to what happens when researchers in a tiny boat are surrounded by huge North Atlantic Right Whales.
Audio

North Atlantic Right Whale: One Species at a Time

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