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a man snorkels above a reef while a woman in flippers sits on a boat
Timeline

Sunscreen in the Environment

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A Pontoh pygmy seahorse
Slideshow

10 Things You Never Knew About Seahorses

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a golden brown coral surrounded by orbs
Photo

Coral Spawning

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a sunken propeller becomes overtaken by a reef with two scuba diver in the background
Photo

SS Quartette

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a reef with plenty of fish
Photo

SS City of Washington

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a fuzzy brown sea anemone cover the coral
Photo

Corallimorphs

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Coral showing signs of disease
Photo

Disease Takes Hold

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coral polyps
Photo

Healthy Coral Polyps

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a sea fan grows over dead coral
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Waving Sea Fans

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a highly bleached coral reef
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Bleached

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scuba divers swim over bleached stag corals
Photo

White Corals in a Bleached Reef

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Colorful Christmas tree worms
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A Forest of Christmas Tree Worms

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