This was a "Snorkeling with Sea Turtles" half day trip with Fury Charters, www.usvisailing.com. The captain, crew and boat are wonderful and well worth going! It takes you from the Grand Marina in Charlotte Amalie to a small island, Buck Island National Wildlife Refuge. It is about 20 minutes of sailing each way, then lots of time in the water. There are snacks and drinks provided as well as quality snorkel gear.