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A dredge from the U.S. Army Corps of Engineers can be seen removing a sandbar off of Virginia Beach, VA.
Article

Diving into the Sandstorm

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Colorful corals are disappearing in the Great Barrier Reef.
Photo

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.
Photo

Undisturbed vs. Trawled Reef

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Algae has overtaken this coral reef off heavily populated Kiritimati, or Christmas Island.
Photo

Unhealthy Coral Reef, Kiritimi, Line Islands

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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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Colorful corals are disappearing in the Great Barrier Reef.
Article

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

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A screenshot from the video of Nancy Knowlton on PBS NewsHour.
Video

Where did Half of the Great Barrier Reef's Coral Go?

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Screenshot from video "Connecting Coral Reefs" showing illustrations of an underwater coral community.
Video

Connecting Coral Reefs

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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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A map of NOAA's 13 marine protected areas
Article

40 Years of National Marine Sanctuaries

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MarineGEO takes a closer look at how human-built marine structures, such as docks and pilings, are affecting ecosystem heath. This phenomenon, called marine urbanization, is poorly understood and becoming increasingly common along the world’s coastlines,
Video

Marine Urbanization

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A brittle star clings to the branches of a deep sea coral
Photo

Brittle Star Coral Mutualism

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