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These deep-sea corals at the Madison-Swanson Marine Reserve are protected, along with the marine life they harbor.
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Protected Deep-sea Corals

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A net used to trawl the ocean floor scooped up this large specimen of deep-sea coral.
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Coral Trapped in Trawler Net

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This deep-sea coral specimen shows the bands that help marine scientists learn how ocean conditions changed over time.
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Deep-Sea Coral Bands

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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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A rockfish finds refuge in a red tree coral, a deep-sea coral in the Olympic Coast National Marine Sanctuary.
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Rockfish Sheltering in Coral

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This black coral is more than 4,200 years old. Named for the color of their skeletons, black corals come in many colors.
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How old is black coral?

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A submersible’s robotic arm collects gold coral in the Hawaiian Islands. Similar specimens have been dated at more than 2,700 years old.
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Collecting Gold Coral from the Deep Sea

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UV light illuminates growth rings in a cross-section of 44-year-old Primnoa resedaformis coral found about 400 m (1,312 ft) deep off Newfoundland.
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Coral Growth Rings

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Scientists recently discovered the Christmas tree coral (Antipathes dendrochristos) off the southern California coast.
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New Christmas Tree Coral

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The robotic arm of the Jason, a Remotely Operated Vehicle (ROV), collects several stalks of black coral from the seafloor.
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ROV Collects Black Corals

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Lights attached to this deep-sea camera system enable scientists to capture detailed images of deep-sea corals in otherwise dark water.
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Deep-Sea Camera

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The Autonomous Underwater Vehicle (AUV) SeaBed is about to be deployed.
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Autonomous Underwater Vehicle

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