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The Johnson-Sea-Link submersible returns with a specimen of Keratoisis bamboo coral inside its collection box.
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Submersible with Coral Samples

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This 200-year-old bamboo coral colony is growing on the Davidson Seamount. The skeleton has bamboo-like segments.
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Bamboo 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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Tree corals like this Calyptrophora bayer can grow several meters high and resemble brightly colored trees.
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Red Tree Coral

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The pink strands of this coral harbor a variety of organisms. Sea whips are gorgonian corals, with flexible skeletons.
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Sea Whip Coral

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: A thicket of Lophelia pertusa, a widespread deep sea coral, shelters a squat lobster.
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Coral Thicket with Lobster

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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 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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Unlike the shallow tropical coral reef at left, the deep-sea Oculina reef at right does not require sunlight.
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Shallow and Deep-Sea Coral Reefs

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In Egypt, Dr. Jean-Daniel Stanley of the Smithsonian studies submerged ancient settlements.
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Underwater Archaeology

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ancient fish
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When Fish Wore Armor

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an ancient seascape
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Life in the Ediacaran

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