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A coral reef covered by silt and sand in the Western Pacific Ocean.
Photo

Coral Reef Covered by Silt and Sand

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Compare the healthy coral on the left with the bleached coral on the right.
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Bleached Corals, Pacific Ocean

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

Two Views of Coral Reefs: Thriving and Threatened

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Colorful corals are disappearing in the Great Barrier Reef.
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Coral at the Great Barrier 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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Colorful corals are disappearing in the Great Barrier Reef.
Article

The Great Barrier Reef – Going, Going, Gone???

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