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Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.
Slideshow

Zooxanthellae and Coral Bleaching

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Pygmy Seahorse Blends Into its Environment
Photo

Eye to Eye With a Pygmy Seahorse

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Walter Adey and the NMNH coral reef tank
Article

The Evolution of a Reef Aquarium

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an orange coral at the bottom of the ocean
Article

A Fantastic Journey: From the Seafloor to the Museum Collection

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Colorful fishes throng a reef in the Northwestern Hawaiian Islands.
Slideshow

Bizarre and Beautiful Coral Reef Animals

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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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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 "reef hotel" made of PVS layers on the seafloor.
Article

Worth the Investment: Ocean Real Estate Reveals Hidden Diversity

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Compare the healthy coral on the left with the bleached coral on the right.
Photo

Bleached Corals, Pacific Ocean

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On Moorea, an island in French Polynesia, researchers are striving to complete a biocode—a DNA catalog of every life form big enough to pick up with tweezers.
Overview

Scientists Catalog Life on the Island of Moorea

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An underwater photo of coral recovering from a bleaching event.
Article

A Pleasant Surprise: The Recovery of Bleached Panamanian Corals

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Intense volcanic CO2 vents in Ili Ili Bua Bua, Normanby Island, Papua New Guinea.
Slideshow

Will Coral Reefs Survive Acidification?

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