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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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Two Southern Resident killer whales.
Article

When Killer Whales Hunt the King of Salmon

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Phoenix swimming with her calf.
Slideshow

Baleen: From Whales to People

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Polar bears are threatened by a lack of sea ice.
Article

Climate Change at the Poles

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Blue whale skull being installed at National Museum of Natural History.
Article

When Did Today’s Whales Get So Big?

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A vaquita pops its head out of the water.
Slideshow

Vaquitas in Peril

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A blue whale model in the Life in the Sea exhibit
Photo

The Second Whale

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an animated dolphin in an arm chair
Video

Don't Feed Wild Dolphins

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The Wadden Sea site in Germany and the Netherlands was inscribed on the World Heritage List in 2009. It hosts marine mammals, including the harbor seal Phoca vitulina, pictured here.
Photo

Wadden Sea, Germany & the Netherlands

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a sperm whale
Video

Moby Dick's Boom Box: Sound Production in Sperm Whales

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The head of one bottlenose dolphin and the fin of another are visible above turquoise water in the Potomac River
Article

A Dive into Dolphin Data: The History of Bottlenose Dolphins in the Potomac River

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A whale size comparison chart
Photo

What is the Largest Whale? A Cetacea Size Comparison Chart.

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