Once in a lifetime experience. The giant manta rays were inches away from you. The manta rays swam belly up along the entire oval shaped raft that we all held onto. They were massive. The boat ride was nice and the crew was very knowledgeable (Jacob, Keanu, Oleo). I thought it would be scary getting in the open ocean in the dark, but the water felt warm and the raft we held onto was nearby. I don't see how you can visit the big island without doing this excursion. This was the highlight of our vacation.