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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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Orange and red deep-sea corals.
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Aleutian Coral Reef

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The branches of a primnoid coral in the genus Calyptrophora provide a habitat for galathaoid crabs.
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Primnoid Coral

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Rockfish, anemones and other invertebrates inhabit this deep-sea coral reef in Cordell Bank National Marine Sanctuary.
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Deep-Sea Coral Habitat

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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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Coral scientist Dr. Amy Baco-Taylor observed corals like these on her first submarine dive to a deep-sea coral bed off the coast of Hawaii.
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Deep-Sea Coral Community

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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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Coral scientist Dr. Amy Baco-Taylor observed corals like these on her first submarine dive to a deep-sea coral bed off the coast of Hawaii.
Overview

Deep-sea Corals

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Dr. J. Murray Roberts photographed these living polyps from the Mingulay Reef Complex off Scotland in aquaria in 2010.
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Lophelia Pertusa Coral Polyps

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Two nurse sharks hover over a baited cage
Lesson Plan

Treasures in Jeopardy

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This bubblegum coral has a fanlike shape. It is growing 1,310 m (4,298 ft) deep on the Davidson Seamount.
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Bubblegum Coral

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After ocean scientists sort deep-sea coral samples into their different types, they measure and photograph the specimens.
Slideshow

Studying Deep-Sea Corals

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