Description from the publisher
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. 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.
How to get there
Take the ferry to Vieques island, in the city of Fajardo. Call before visiting.