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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
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Ice Melt in Iceland

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

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The Greenland glacier Jakobshavn Isbrae is massive, at around 40 miles long and more than a mile thick.
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Jakobshavn Glacier

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A team of scientists explore the Arctic ocean.
Slideshow

Under Arctic Ice

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An iceberg calves from Antarctica's Pine Island Glacier
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Pine Island Glacier

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Two nurse sharks hover over a baited cage
Lesson Plan

Global Climate Change and Sea Level Rise

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The Antarctic minke whale is the only baleen whale found in the icy waters of the Antarctic.
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Antarctic Minke Whale

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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.
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Blue-Green Antarctic Glacier

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Two nurse sharks hover over a baited cage
Lesson Plan

Biomes: Wild Arctic

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Two nurse sharks hover over a baited cage
Lesson Plan

Where Have All the Glaciers Gone?

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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

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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
Overview

Sea Level Rise

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