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Two nurse sharks hover over a baited cage
Lesson Plan

Biomes: Wild Arctic

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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 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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A walrus sits on top of ice.
Article

The Cultural Icescapes of the Arctic

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data of sea ice coverage in the Arctic
Article

Arctic Sea Ice: A New Low?

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A team of scientists explore the Arctic ocean.
Slideshow

Under Arctic Ice

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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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