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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.
Article

Martha Nizinski: Hooked on Deep-Sea Corals

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Dr. Brendan Roark discusses different methods of sampling deep-sea corals with undergraduate students at Texas A&M University.
Article

Coral Scientist Brendan Roark: On an Urgent Mission

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A fan-shaped colony of red coral (Corallium sp.) provides a perch for three basket stars as they feed.
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Red Coral

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

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Tiny sponge spicules.
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Sparkling Sponge Spicules

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Ari Daniel Shapiro and Dr.Randi Rotjan of the New England Aquarium, journey to the Phoenix Islands to study coral bleaching.
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Coral Reefs: One Species at a Time

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dead coral from disease
Article

Sickness in the Sea: A Coral Plague Hits Florida

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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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Flower-like clusters of pink polyps make up this coral colony.
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Coral Colony

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Photo of coral polyp, with a single bleach polyp.
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Corals Threatened by Acid Seas

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Researchers adopted the “yabbie pump,” the long silver tool shown here, from Australian fishing gear.
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Collecting Shallow-Water Specimens with the "Yabbie Pump"

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