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In some reefs, small fishes such as this broad-barred goby protect corals by eating invading seaweeds.
Photo

Coral Goby Cleans Coral

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Scientist Martha Nizinski examines a sample of the deep-sea coral Lophelia pertusa, collected 600-m (1,969-ft) deep off the coast of the southeastern United States.
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Deep-Sea Coral Sample

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A squat lobster and blackbelly rosefish find shelter on a Lophelia pertusa coral reef off the southeastern United States.
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Coral Reef Lobster and Fish

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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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White and black corals in murky sea water
Article

Collecting Coral Codes: Environmental DNA Helps Scientists Assess Coral Biodiversity 

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Nuclear bomb in Bikini Atoll
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Naturally Resilient

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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.
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Shallow Coral Reef Foraminifers

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This queen parrotfish scrapes algae from Caribbean reefs with its parrot-like beak.
Article

From Despair to Repair: Protecting Parrotfish Can Help Bring Back Caribbean Coral Reefs

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Grey reef sharks are among the most versatile and tough predators on a Pacific coral reef, but they are also among the most vulnerable species, as they are threatened by wasteful fishing practices like shark finning.
Article

Where the Shark and the Snapper Roam

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Walter Adey and the NMNH coral reef tank
Article

The Evolution of a Reef Aquarium

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Two coral trout swim on a reef in Fiji.
Article

Having Your Fish and Eating Them Too

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After ocean scientists sort deep-sea coral samples into their different types, they measure and photograph the specimens.
Slideshow

Studying Deep-Sea Corals

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