The Manialtepec lagoon is populated with millions of known dinoflagellate microorganisms which give off the natural phenomenon of Bioluminescence!
The lights or "brightness" in the water is the result of a chemical reaction between substances present in them which when combined, flash.
When produced, a type of light is generated, which is called bioluminescence. They sparkle when the water is agitated by a boat, with the oars, with your hands, when it simply rains or when swimming!
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