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: Black corals often resemble bushes or trees. Their living tissue can be one of several colors. It’s the skeleton that is black.
Article

Black Corals of the Deep

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The Belize Barrier Reef Reserve System consists of the largest barrier reef in the northern hemisphere, offshore atolls, and several hundred sand cays, mangrove forests, coastal lagoons, and estuaries. The system's seven sites illustrate the evolutionary h
Article

Charles Darwin's Ocean Upwelling

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Tiny organisms found on ARMS
Article

From Field to Lab: How Carbon Seeps Provide a Chance to See Future Impacts of Ocean Acidification

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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

A Tale of Deep Corals

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Two nurse sharks hover over a baited cage
Lesson Plan

Caution! Do Not Bleach

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Two nurse sharks hover over a baited cage
Lesson Plan

Treasures in Jeopardy

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This orange boring sponge (Cliona varians) overgrows several coral species at Panama's Smithsonian Tropical Studies Institute.
Article

Ocean Acidification Excites Boring Sponges

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Nancy standing by the ocean
Article

Corals to Communication: Nancy Knowlton’s Success Focusing on the Imminent

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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 woman with short black hair and a long necklace of pearls sits in front of a microscope and holds a small button coral
Article

Joan Murrell Owens and her Button Corals

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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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