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World's biggest bacterium found in Caribbean mangrove swamp
FILE - Boat with tourists visiting the Caroni Bird Sanctuary to see the red Scarlet Ibis and the mangroves on October 21, 2012, in Port of Spain, Trinidad And Tobago. (EyesWideOpen/Getty Images)WASHINGTON - Scientists have discovered the world's largest bacterium in a Caribbean mangrove swamp.Most bacteria are microscopic, but this one is so big it can be seen with the naked eye.The thin white filament, approximately the size of a human eyelash, is "by far the largest bacterium known to date," said Jean-Marie Volland, a marine biologist at the Lawrence Berkeley National Laboratory and co-author of a paper announcing the discovery Thursday in the journal Science.Olivier Gros, a co-author and biologist at the University of the French West Indies and Guiana, found the first example of this bacterium — named Thiomargarita magnifica, or "magnificent sulfur pearl" — clinging to sunken mangrove leaves in the archipelago of Guadeloupe in 2009.But he didn’t immediately know it was a bacterium because of its surprisingly large size -- these bacteria, on average, reach a length of a third of an inch (0.9 centimeters).