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A small gray fish with two orange stripes, hides in between corals.
Article

Tiny Fishes Fuel Coral Reefs

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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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Fish swim underwater amidst mangrove roots at Bocas del Toro, Panama.
Article

On the Trail of DNA in the Ocean

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a red lionfish
Video

Lionfish on the Loose

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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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A Pontoh pygmy seahorse
Slideshow

10 Things You Never Knew About Seahorses

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In the X-ray image of this Viper Moray Eel (Enchelynassa canina), note the second set of jaws in the “throat”; these are the gill arches, which are present in all fish.
Photo

X-Ray Image of a Viper Moray Eel

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A pearly razorfish
Photo

Pearly Razorfish

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Raccoon butterfly fish and angelfish on a reef in the Red Sea, near Sharm el Sheik, Egypt.
Photo

Coral Reef Scene

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Valentinni's sharpnose puffer lives on Indo-Pacific coral reefs, where it shoals in groups of 10-100 puffers and feeds on algae and tunicates.
Photo

Valentinni's Sharpnose Puffer

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Whip coral gobies live on coral reefs throughout the Indo-Pacific, where they are found on a single species of coral: black wire coral.
Photo

Whip Coral Goby Portrait

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Whitemouth morays hide in the crevices of Indo-Pacific coral reefs with only their heads (and white mouths) emerging, mouths agape, to breathe and hunt crustaceans and fish.
Photo

Eel, Embedded

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