This was a very unique and exciting experience. Upon check in, we were fitted with wetsuits and introduced to our boat captain. There were approximately 15-20 people on the boat with us. We motored out to the viewing spot (took about 2 minutes to get there) and were provided with snorkels, masks and water noodles. We were given some brief instructions and then hopped into the water. Immediately, we spotted a Manta Ray. It came very close to us and did a couple of rolls just inches from our faces. That was exciting. There were many other companies operating tours at this same spot and one of them had divers and lights on the bottom of the sea. This attracted the rays away from our lights and over toward theirs (they were much stronger lights than we had) so from that point on, we were only able to watch them from a distance, which was unfortunate. If I do this again, I'm definitely doing the dive versus the snorkel. Also, of note, if you are a person who gets motion sick, take a drammamine before doing this activity. Even if the waters are relatively calm, you'll be relatively motionless in the water, bobbing around for the majority of the time and that can tend to make a person queasy.