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Many medicines were based on a chemical from the sea sponge Tectitethya crypta.
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From Sea Sponge to HIV Medicine

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Giant clams are one of the many wonders of coral reefs. They can grow up to five feet wide, weigh over 400 pounds, and live for 100 years!
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Restocking Giant Clams

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A brittle star clings to the branches of a deep sea coral
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A Brittle Star May Be a Coral’s Best Friend

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Gerardia, or gold coral, species often have a tree-like shape, as evident in this specimen.
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Gold Coral

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

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Cancer cells treated with discodermolide, a chemical from a sponge found on deep-sea coral reefs.
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Treated Cancer Cells

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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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What is coral? The answer is coral is an animal. This cutaway diagram of a coral polyp shows the location of its photosynthetic algae, or zooxanthellae, which coral needs to survive.
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What Is Coral? A Coral Polyp and Zooxanthellae

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Dr. Brendan Roark discusses different methods of sampling deep-sea corals with undergraduate students at Texas A&M University.
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Coral Scientist Brendan Roark: On an Urgent Mission

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dead coral from disease
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Sickness in the Sea: A Coral Plague Hits Florida

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Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.
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Zooxanthellae and Coral Bleaching

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