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.
Related Links
Cayman Islands Twilight Zone 2007