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a brittle star clings to a pink coral
Overview

Deep-Sea Corals

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An oceanic whitetip shark swims near a biologist in the Bahamas.
Slideshow

Spectacular Shark Pictures

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a man snorkels above a reef while a woman in flippers sits on a boat
Timeline

Sunscreen in the Environment

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A polar bear and its cub in Arctic National Wildlife Refuge, Alaska.
Slideshow

Celebrating Marine Moms

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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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A Mesozoic Ocean scene
Overview

Ocean Through Time

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two images cropped together of women at desks facing each other
Timeline

An Irrepressible Wave

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Great hammerhead in Bimini, Bahamas.
Overview

Sharks

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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
Overview

Corals and Coral Reefs

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Two octopuses sitting underwater highlight the different textures the animals can take on.
Overview

Octopuses, Squids, and Relatives

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two humpback whales swim underwater
Overview

Whales and Dolphins

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A sea turtle swimming
Overview

Sea Turtles

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