If you got a chance, Mosquito Bay on the island of Vieques, Puerto Rico, is full of bioluminescent microorganisms. There are canoe tours that let you experience it up close. I hear they don't let you do it anymore, but when I went in 2007 and 2009, they let you swim in there and it was amazing. Every movement of your arm and legs left a glowing trail of light. (They stopped allowing swimmers because that body of wate…
Was in Vieques recently, absolutely amazing! If possible, try to plan to go when it isn't a full moon, or the sky is cloudy. Harder to see the illumination when the moon is shining bright. And you're correct they don't allow you to swim in it any longer, but they say its because it's harmful to the microorganisms, didn't mention the shark nursery.