Bio Bay...

"Hidden along the Caribbean coast is one of the most spectacular Bioluminescent Bays in the world. The mysterious blue-green light is created by micro-organisms which thrive in an environment uniquely suited to their needs. A trip into the bay on a balmy night is a magical experience. Fish flash by in dark water, and a swim is like floating through stardust." - Captain Sharon Grasso

Island Adventures Biobay Tours offers nightly excursions aboard our electrically powered double-pontoon boat through the amazing waters of Puerto Mosquito in Vieques Island. Our bilingual guides explain the fragile ecology of the plants and animals of the bay, give interpretive star lectures, and then park the boat in an area of high bioluminescent concentration, giving visitors the chance to swim with the millions of glowing creatures.

Why does the water glow?
This unique bay contains up to 720,000 single-celled bioluminescent dinoflagellates per gallon of water. These half-plant, half-animal organisms emit a flash of bluish light when agitated at night. The high concentration of these creatures (Pyrodimium bahamense) can create enough light to read a book from. Learn more by reading several articles on the bay.

To read more about it... go here.