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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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Ari Daniel Shapiro and Dr.Randi Rotjan of the New England Aquarium, journey to the Phoenix Islands to study coral bleaching.
Audio

Coral Reefs: One Species at a Time

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A rendering of an underwater marine scene depicting life ~145-65 million years ago, when rudist clams were the major reef builders.
Article

Long Before Coral, Mollusks Built the Ocean's Reefs

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In this photo of a shallow coral reef in the Pacific there are three species of forams. Their colors come from the symbiotic algae that live inside the foram shells.
Photo

Shallow Coral Reef Foraminifers

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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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Flower-like clusters of pink polyps make up this coral colony.
Photo

Coral Colony

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A piece of the Hyperbolic Crochet Coral Reef exhibit.
Article

When Art Meets Science: The Hyberbolic Crochet Coral Reef

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A screenshot from the video of colorful corals.
Video

Slow Life: Time-Lapse on the Coral Reef

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What is coral? The answer is coral is an animal. This cutaway diagram of a coral polyp shows the location of its photosynthetic algae, or zooxanthellae, which coral needs to survive.
Photo

What Is Coral? A Coral Polyp and Zooxanthellae

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Scientist Martha Nizinski holds a squat lobster (Eumunida picta) collected at the Lophelia reefs off Cape Lookout, North Carolina.    
Photo

Squat Lobster from Reefs of North Carolina

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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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The staghorn coral is listed as Threatened under the U.S. Endangered Species Act. It is one of 22 coral species listed.
Photo

Staghorn Coral

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