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The Ross Sea is a 1.9 million square mile (3.6 million square km) stretch of ocean off the coast of Antarctica.
Slideshow

A Trip South to Antarctica’s Ross Sea

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A narwhal breaches the surface, its tusk pointed to the sky
Photo

Tusks of Mystery

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Three distinct types of killer whale can be found in the Antarctic, each with a different habitat and diet preference.
Photo

Orcas in the Antarctic

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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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A walrus sits on a floating piece of ice.
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Walrus on Ice

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A narwhal breaches the surface, its tusk pointed to the sky
Article

Why a Tusk? The real-life unicorns of the sea and the tusks that make them famous

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