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Waves breaking on the shore
Overview

Currents, Waves, and Tides

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A photo of a squid using bioluminescence to hide in the deep sea.
Overview

Bioluminescence

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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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Great hammerhead in Bimini, Bahamas.
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Sharks

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Great White Sharks breach to hunt -- with split-second timing they grab their prey in one swift snatch. Follow the whole breaching action in this slideshow.
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Great White Shark

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Seagrasses are flowering plants that can form dense underwater meadows and are an important shallow water habitat.
Overview

Seagrass and Seagrass Beds

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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.
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Sea Stars, Urchins, and Relatives

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a deep sea jellyfish
Overview

The Deep Sea

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two mangrove trees in the crashing waves
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Mangroves

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Three gray fish swim in front of a large coral head.
Overview

How Laws Around the World Help Improve Ocean Health

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Chrysaora melanaster is a jellyfish found in the Arctic.
Overview

Jellyfish and Comb Jellies

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two humpback whales swim underwater
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Whales and Dolphins

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