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a veterinarian listens to a dolphin's heartbeat
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Heart Check Up

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A pod of killer whales from above.
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A Pod of Whales

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A beaked whale at the ocean's surface
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A Ship-Wary Beaked Whale

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A harp seal in icy water
Overview

Seals, Sea Lions, and Walruses

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An adult and juvenile killer whale frolic in the water.
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Killer Whales Swimming

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A blue whale with a removable tag surfaces off the coast.
Slideshow

The Tons that Whales Eat...and Poop

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A baleen plate with a drawing of a ship in paint
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Artful Baleen Plates

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A vaquita pops its head out of the water.
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Swimming Vaquita

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In December 2003, researchers spot Phoenix off the coast of Florida with her second calf.
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Phoenix and Second Calf

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A manatee swimming in shallow waters.
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Manatees

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Dolphins swimming among oily patches in the Gulf of Mexico
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Dolphins Swim in Oily Waters

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Two sea lions interact amongst schools of small fish.
Slideshow

Seal and Sea Lion Pictures

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