The Wondrous World of the Imperiled Coral Reefs

According to a survey by the Global Marine Species Assessment, one third of the more than 700 species of reef building corals are threatened with extinction. Here, Scale fin Anthias swim on Coral Reef near Ras Mohammad, Egypt.
Jeffrey Rotman / Corbis

Life Aquatic
According to a survey by the Global Marine Species Assessment, one-third of the more than 700 species of reef building corals are threatened with extinction. Here, Scalefin Anthias swim on a coral reef near Ras Mohammad, Egypt.

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