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Coral scientist Dr. Amy Baco-Taylor observed corals like these on her first submarine dive to a deep-sea coral bed off the coast of Hawaii.
Slideshow

Diversity of Deep-Sea Corals

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Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.
Slideshow

Zooxanthellae and Coral Bleaching

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A wave curls near the shore.
Overview

American Spaces

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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 fishes throng a reef in the Northwestern Hawaiian Islands.
Slideshow

Bizarre and Beautiful Coral Reef Animals

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Mangrove roots provide an underwater habitat for many marine species.
Slideshow

Mangroves: Photos of Plants and Animals

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two images cropped together of women at desks facing each other
Timeline

An Irrepressible Wave

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“On an afternoon dive, I spotted a small group of sweetlips in the current among a shoal of juvenile convict blennies. It took me some time to get close to the fish without spooking them. I took several frames but this one was my favorite because of the
Slideshow

Ocean Fish Pictures

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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
Overview

Corals and Coral Reefs

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A thin layer of oil on the water's surface, reflecting rainbow colors
Timeline

Gulf of Mexico Oil Spill Milestones

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two humpback whales swim underwater
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Whales and Dolphins

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A sea turtle swimming
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Sea Turtles

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