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A harp seal in icy water
Overview

Seals, Sea Lions, and Walruses

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In 2011, storms and lack of ice-cover due to a warmer winter climate resulted in hundreds of seal pups being washed up on the shore of Prince Edward Island. Like many, this young seal faced an uncertain future. See more Nature's Best Photos.
Article

Ice-Loving Seals and the Loss of Sea Ice

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Smithsonian researchers eat a meal in preparation for a fossil excavation
Slideshow

A Squalodontid Success

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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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a graphic of seals, sea lion, and a walrus
Photo

How Big Do Seals Get?

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A female manatee and her calf are captured on film foraging in seagrass off the coast of Brazil.
Photo

Female Manatee Foraging with a Calf on Her Back

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Photo of a sperm whale just below the water's surface.
Photo

Sperm Whale, Dominica

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Elephant seals' eyes are specialized to dim light and, in particular, to light at the wavelength of 485 nm -- which is the same wavelength given off by the bioluminescent lanternfish that are the seals' main prey.
Photo

Elephant Seals Laze on the Beach

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a humpback jumps in an arc over the water
Photo

A Humpback Breach

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A North Pacific right whale swims in the Bering Sea.
Photo

North Pacific Right Whale

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a small hut on the shore is surrounded by thousands of walruses
Photo

Walruses For Miles

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A humpback whale breaching.
Article

Bacteria on Whale Skin Tell a Tale of Health and Sickness

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