I am from Puerto Rico, and there are actually 3 Bioluminescent bays... If you ask for the 'glowing bays' they will lead you there easily. And once there, local fishermen will take you deeper out the coast to enjoy the event even more, and just for $2-$5 per person, depending on the boat... (HINT FROM A LOCAL: TAKE THE SMALLEST BOATS, not only they are cheaper, but you are in complete contact with the bay and even can jump out safely to swim). For kids, there are also glass-bottom boats. It is an amazing experience, like no other in the world!