Cyanobacteria are increasingly common on Caribbean coral reefs and are frequently found overgrowing benthic organisms such as this soft coral (Eunicea sp.). Although some cyanobacteria form symbiotic relationships with a host organism, others are detrimental and can cause tissue necrosis and mortality. Images Courtesy of the Twilight Zone Expedition Team 2007, NOAA-OE.
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Cayman Islands Twilight Zone 2007
