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Two nurse sharks hover over a baited cage
Lesson Plan

Why Do We Explore the Ocean?

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Antarctica is almost entirely covered by ice sheets up to two miles (3 km) thick, which contain roughly 70% of the world’s freshwater.
Photo

Ross Sea Ice Shelf

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a wood frame dries walrus hide
Photo

Walrus Hide

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The sea star Odontaster validus and sea urchin Sterechinus neumayeri are often found living in association with one another along the Antarctic coastline, here during the Census of Marine Life.
Overview

Sea Stars, Urchins, and Relatives

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Horizontal bands of color represent different species of lichen that have adapted to the conditions at different heights above sea level.
Article

Seaside Lichens

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Portrait of Mary Anning, before 1842
Photo

Portrait of Mary Anning, before 1842

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A Gulf Coast resident sits on his boat, smiling for the camera.
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Smiling Gulf Coast Man

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A stingray swims in an Australian marine reserve.
Photo

Australia's 1.2 Million Mile Marine Reserve

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A right whale breaches, lifting its huge body out of the water.
Photo

North Atlantic Right Whale Breaching

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North Atlantic right whales were long hunted for their baleen—the fringed plates hanging in their mouths that they use to strain the seawater for food. Baleen was used in a number of consumer products, such as corsets.
Photo

Whale Baleen from a Dead Whale

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An 'austral' or southern breeder, Great Shearwaters (Ardenna gravis) migrate from breeding islands far to the south in the Atlantic before traveling to the Northern Atlantic to feed.
Article

12,000 Miles to Go: Migrating with Shearwaters

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