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But closer to the CO2 seeps, the complex reef has been replaced by a “monoculture” of boulder corals.
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Monoculture of Boulder Corals

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a display case of red coral jewelry containing necklaces, earrings, bracelets, and rings
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Avoid Coral Jewelry

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The coastline of American Samoa National Marine Sanctuary
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American Samoa National Marine Sanctuary

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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
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Coral Reef on Gangga Island, Indonesia

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These bleached corals in the Gulf of Mexico are the result of increased water temperatures.
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Bleached Corals

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Dr. Stephen Cairns, a Smithsonian research zoologist, studies deep-water corals.
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Dr. Stephen Cairns

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Shallow water coral reefs straddle the equator worldwide.
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Global Distribution of Shallow Coral Reef Ecosystems

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Researchers adopted the “yabbie pump,” the long silver tool shown here, from Australian fishing gear.
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Collecting Shallow-Water Specimens with the "Yabbie Pump"

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A bluefin trevally swims in Hawaii’s Maro Coral Reef, part of the Papahānaumokuākea Marine National Monument.
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Hawaii’s Maro Coral Reef

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Orange and red deep-sea corals.
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Aleutian Coral Reef

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A comparison of an undisturbed Oculina coral reef and one that has been devastated by trawling.
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Undisturbed vs. Trawled Reef

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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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