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Pink crustose algae covers the surface of a rock.
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Microbes Help Corals Pick a Home and Settle Down

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Scientist Martha Nizinski examines a sample of the deep-sea coral Lophelia pertusa, collected 600-m (1,969-ft) deep off the coast of the southeastern United States.
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Deep-Sea Coral Sample

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Syllid fireworms can be found mainly on the seafloor, but they switch to a planktonic form to reproduce, where the females use bioluminescent signals.
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Syllid Fireworms

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stony corals among sea fans
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Ancient Reefs Reveal Glimpse at Future Oceans

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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
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Charles Darwin's Ocean Upwelling

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Colorful corals are disappearing in the Great Barrier Reef.
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The Great Barrier Reef – Going, Going, Gone???

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A coral has just spawned. Each of the hundreds of polyps releases a small pink bundle of sperm and eggs.
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A Tale of Sex and Stress in the Ocean

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an orange coral at the bottom of the ocean
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A Fantastic Journey: From the Seafloor to the Museum Collection

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Fish swim underwater amidst mangrove roots at Bocas del Toro, Panama.
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On the Trail of DNA in the Ocean

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Scientist Martha Nizinski examines a sample of the deep-sea coral Lophelia pertusa, collected 600-m (1,969-ft) deep off the coast of the southeastern United States.
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Martha Nizinski: Hooked on Deep-Sea Corals

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corals of many colors in the deep sea
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Deep Gulf Restoration After a Monumental Oil Spill

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

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