The brightest bay in the world containing the magical phenomenon of bioluminescence is found in Mosquito Bay in Vieques, Puerto Rico. The surface of the water in the bay glows a bright blue-green at night due to a bioluminescent microorganism.
The science behind the magic; bioluminescence is the making and emission of light by a living organism. It occurs widely in marine organisms in both vertebrates and invertebrates. It occurs in microorganisms including some bacteria, fungi and also in terrestrial invertebrates like fireflies.
The most popular occurrence, and perhaps the most magnificent, is on the surface layers of the ocean. Microscopic plankton called dinoflagellates creates the glow in the water at night. Scientists hypothesize it is a defense mechanism for the species. The chemical reaction that produces light happens when the enzyme dinoflagellate luciferase reacts with the substrate luciferin. It is estimated that three of these microscopic creatures could fit on the head of a needle.
The luminescence occurs as a brief bright blue flash (0.1 sec) usually from mechanical disturbance. The stimulation of the water- by boat, oars, rain or waves produce an emanating blue sparkling light off the surface of the sea. The highest concentration per liter in the world, of these plankton, are found in Mosquito bay in Vieques. Mangroves surround the bio-bay and the S shaped entry from the ocean protects it from the open sea.
The bioluminescent bays of the world are rare and described as fragile ecosystems. They are a magical wonder definitely worth seeing in this life.
The video below uses a special camera to capture the magic of bio-bay as seen by the human eye.