National Geographic News, Reporting Your World Daily

Monday, November 23, 2009

Photo: A Third of Reef-Building Corals at Risk of Extinction


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The coral species Porites pukoensis pictured above is among those listed as "critically endangered" on the International Union for Conservation of Nature's Red List.

A third of the world's major reef-building coral species are in danger of extinction, according to a study published July 10, 2008.

Photograph by Donald C. Potts