We booked this tour to experience the bioluminesce. It was a magical experience Our guide Michael was knowledgeable and personable. He took the time to explain the phenomenon of the phytoplankton and gave clear instructions on how to snorkel in the darkness with safety in mind for both humans and the environment. The experience of being surrounded by what seemed like a million twinkling stars and creating a glow with every motion was an unforgettable delight.