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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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Where the pH is the lowest, corals can no longer grow - sand, rubble and seagrasses replace the reef.
Article

Sneak Peek: Future of Coral Reefs in an Acidifying Ocean

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A variety of organisms make their home on this tropical coral reef in Indonesia.
Article

Coral Reefs Need You

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Algae growing on underwater rock
Article

Heroes of Herbivory

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Two nurse sharks hover over a baited cage
Lesson Plan

In Hot Water

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A zoomed-in image of the crown-of-thorns sea star.
Article

A Plague of Sea Stars

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Two nurse sharks hover over a baited cage
Lesson Plan

Keeping Watch on Coral Reefs

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Many species of pink coralline algae, which cements coral reefs together, cover a reef surface in the Southern Line Islands.
Article

Coralline Algae: The Unsung Architects of 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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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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A bluefin trevally swims in Hawaii’s Maro Coral Reef, part of the Papahānaumokuākea Marine National Monument.
Slideshow

Two Views of Coral Reefs: Thriving and Threatened

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