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Looking through this iceberg's reflection in the Antarctic water, you can see the iceberg below the surface—some 90% of its total volume.

Overview

The Arctic and The Antarctic

September 2014

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Walruses use sea ice as platforms on which to nurse their young and launch their dives.

Photo

Walrus Rests on Ice

March 2010

A walrus sits on a floating piece of ice.

Photo

Walrus on Ice

June 2017

Polar bears are threatened by a lack of sea ice.

Article

Climate Change at the Poles

September 2011

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