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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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Two nurse sharks hover over a baited cage
Lesson Plan

Life of a Coral Reef Fish

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Two nurse sharks hover over a baited cage
Lesson Plan

Focus on Farmer Fish

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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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Two nurse sharks hover over a baited cage
Lesson Plan

Fish Feeding

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

Reef Fish, French Frigate Shoals

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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.
Photo

Mandarinfish Duo

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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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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 Pontoh pygmy seahorse
Slideshow

10 Things You Never Knew About Seahorses

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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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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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