We had a combined kayaking/snorkeling tour, and it was really nice. First we had about a 1/2 hour boat ride to a fairly secluded cove, and then had about 1 and 1/2 hours for the kayaking/snorkeling. The kayaking in the open water was a little more strenuous then we'd expected, but it was fun. The snorkeling was great, and we saw lots of tropical fish. It was the first time I'd done either activity.