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an elephant seal with a tracker
Article

Citizens of the High Seas

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a whale's tale caught in fishing gear
Video

Whale Rescue

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A humpback whale breaching in Antarctic waters.
Article

Humpback Whales in Antarctica: What Are the Whales Doing?

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

Phoenix and Second Calf

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This radio device is used to track North Atlantic right whales. Suction cups hold the device to a whale's back, where it records data such as depth, water, temperature, and underwater sounds.
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Whale Tracking Device

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Giant Pacific Manta Ray, Roca Partida Sea Mount, Revillagigedos Islands, Mexico
Article

Tagging and Tracking Animals Underwater

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Three Killer whales (Orca) swim along side researchers.
Article

Listening for Clues About Sonar’s Effects on Marine Mammals

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Phoenix swimming with her calf.
Article

Scientists Use Bioacoustics to Protect Marine Mammals

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