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An algal bloom, also known as a red tide, has converted the ocean's surf to a red color
Article

Scientists Work to Predict and Prevent Algae Blooms

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The robotic underwater glider Scarlet Knight crossed the Atlantic over the course of several months in 2009.
Article

Underwater Robots Explore the Ocean

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Screenshot from the video with illustrations of tiny ocean microbes.
Video

How a Microscopic Team Alters the Course of Carbon in the Atlantic Ocean

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A walrus sits on top of ice.
Article

The Cultural Icescapes of the Arctic

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Two nurse sharks hover over a baited cage
Lesson Plan

Trophic relationships in Arctic marine ecosystems

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

Up Close and Personal With the Fastest Glacier in the World

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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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Two nurse sharks hover over a baited cage
Lesson Plan

Off Base

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Two nurse sharks hover over a baited cage
Lesson Plan

Where There’s Smoke…

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Two nurse sharks hover over a baited cage
Lesson Plan

Deep Lights

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Two nurse sharks hover over a baited cage
Lesson Plan

This Old Tubeworm

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