Once we arrive at the manta ray site, your swim guide will tell you more about the manta ray snorkel experience. A light board is set up in the water for you to hang on to while snorkeling. The light board attracts plankton, which in turn attract the manta rays. And, then... the magical experience begins. The manta rays have learned that the light boards in the water mean food, and the Manta rays will swoop within inches of your face as you lay flat at the sea surface.