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A pearly razorfish
Photo

Pearly Razorfish

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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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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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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.
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Valentinni's Sharpnose Puffer

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Pygmy Seahorse Blends Into its Environment
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Eye to Eye With a Pygmy Seahorse

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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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An underwater photo of a yellow-mouth moray eel.
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Yellow-mouth Moray Eel in the Red Sea (Eilat, Israel)

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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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Convict surgeonfish are the roaming sheep of the reef but, instead of noshing on grass, they feed on algae.
Article

Helpful Herbivores

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A Pontoh pygmy seahorse
Slideshow

10 Things You Never Knew About Seahorses

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The mandarinfish lives in western Pacific tropical coral reef ecosystems and lacks the scales that are typically seen on bony fish.
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Mandarinfish Duo

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An unidentified moray eel held in researcher's hands.
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A Baby Moray Eel, or a Really Small Adult?

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