There are only five bioluminescent bays in the world, and of these, Mosquito Bay is the brightest. Each liter of its water contains hundreds of thousands of Pyrodinium bahamense, the microscopic dinoflagellates that produce an otherworldly blue-green light when agitated. On a night without moonlight, a boat going through these waters burns a trail of iridescence. Here the dinoflagellates have the safe and private harbor they need: the decomposing mangroves provide a bounty of food for the delicate organisms, and the passage to the ocean is shallow and narrow, keeping the disturbance of waves
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