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J. Murray Roberts studies and maps the cold-water corals known as Lophelia in the North Atlantic.
Article

Exploring the Blue Planet with J. Murray Roberts

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Tiny sponge spicules.
Photo

Sparkling Sponge Spicules

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

When Wrecks Become Reefs

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The Peninsula Valdes in Argentina was inscribed on the World Heritage List in 1999. The site is home to important breeding populations of the endangered southern right whale (Eubalaena australis), southern elephant seal (Mirounga leonina), and southern sea
Slideshow

Marine World Heritage Photo Gallery

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Valentinni's sharpnose puffer lives on Indo-Pacific coral reefs, where it shoals in groups of 10-100 puffers and feeds on algae and tunicates.
Photo

Valentinni's Sharpnose Puffer

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Nancy standing by the ocean
Article

Corals to Communication: Nancy Knowlton’s Success Focusing on the Imminent

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stony corals among sea fans
Article

Ancient Reefs Reveal Glimpse at Future Oceans

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Convict surgeonfish are the roaming sheep of the reef but, instead of noshing on grass, they feed on algae.
Article

Helpful Herbivores

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A school of Hawaiian squirrelfish.
Photo

A School of Hawaiian Squirrelfish

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Two coral trout swim on a reef in Fiji.
Photo

Coral Trout in a Fiji Reef

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Two nurse sharks hover over a baited cage
Lesson Plan

Treasures in Jeopardy

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This orange boring sponge (Cliona varians) overgrows several coral species at Panama's Smithsonian Tropical Studies Institute.
Article

Ocean Acidification Excites Boring Sponges

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