This up close encounter with the giant manta rays was amazing. It was really cold, so if you have a full body wet suit, bring it. I bought my daughter one before we left and she made it much longer than I did with the provided wet suit shirt.
Also, listen to their advice and swim around the people at the first raft if your a strong swimmer and go to the furthest raft. Everyone on our boat was moving down so I just took the next available spot way to close to the boat. Every panicked person kept grabbing my pool noodle and or feet as they freaked out trying to get back to the boat. At one point a guy yanked my pool noodle so hard he actually strained my hip flexor. You would think people that are afraid of the water wouldn’t choose a snorkeling tour, but I think they do it because the rest of their group is doing it.