This outfitter operates some of the best snorkeling trips on the islands, and novices are welcome (they're accompanied by a crew member in shallow water). Some of the shipwrecks include the Constellation and the Montana. The most stunning snorkel trips take you to a spectacular coral reef and sea garden. Operating from April to October, trips cost $65 for adults and children 11 or older, and $45 for ages 8 to 10.