The manta ray night snorkel was voted one of the top 10 things to do in your life by the travel channel experience the kona manta ray snorkel yourself and see what all the fuss is about youll journey only five minutes off the big islands west coast to reach the snorkeling site as the vessels diving lights shine through the crystal clear water these gentle giants arrive to feed on plankton jump in the water for a once in a lifetime chance to night snorkel with hawaiis friendly manta ra