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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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Two nurse sharks hover over a baited cage
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Coral Conservation

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A brittle star clings to the branches of a deep sea coral
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Brittle Star Coral Mutualism

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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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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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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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Two nurse sharks hover over a baited cage
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Coral Adaptations Inquiry Lab

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Two nurse sharks hover over a baited cage
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A Reef of Your Own

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Two nurse sharks hover over a baited cage
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Symbiosis and Coral Anatomy

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Two nurse sharks hover over a baited cage
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Introduction to Coral Reefs

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Two nurse sharks hover over a baited cage
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Mutualism and Coral Reefs

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Two nurse sharks hover over a baited cage
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Coral Reef Relationships

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