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Offshore Peru, during the Eocene (~56-34 million years ago), showing two archaeocetes (ancient whales): Ocucajea picklingi and Supayacetus muizon.
Article

New Archaeocetes from Peru Are the Oldest Fossil Whales from South America

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a diagram of a killer whale using echolocation
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Echolocation

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Two killer whales.
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Killer Whales from Above

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A black and white illustration of a Cuvier's beaked whale.
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Cuvier's Beaked Whale

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In this painting, a giant squid engages in a struggle for survival with a sperm whale.
Article

The Mystery of Ambergris

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a worker sits inside the cast of a whale
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The Cast of a Whale

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A white crabeater seal resting on an iceberg.
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Crabeater Seal

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an elephant seal with a tracker
Article

Citizens of the High Seas

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A mother and calf humpback whale swim side-by-side.
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Mother and Calf

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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
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Aquatic Locomotion of a Sea Lion

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A manatee swims in Crystal River, Florida.
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Florida Manatee in a Fresh Water Spring

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Photo of a man holding totoaba a vaquita caught in a net underneath.
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Vaquitas as Bycatch

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