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Two nurse sharks hover over a baited cage
Lesson Plan

Treasures in Jeopardy

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Compare the healthy coral on the left with the bleached coral on the right.
Photo

Bleached Corals, Pacific Ocean

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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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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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Red coral necklaces in a display window. Harvesting deep-sea coral to produce jewelry like this threatens these ecosystems.
Photo

Coral for Sale

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Nuclear bomb in Bikini Atoll
Article

Naturally Resilient

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Two nurse sharks hover over a baited cage
Lesson Plan

Caution! Do Not Bleach

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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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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 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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