Join Sea Dwellers Dive Center on your snorkel trip to the Florida Keys National Marine Sanctuary and John Pennekamp Coral Reef State Park. Sea Dwellers is one of the oldest standing Dive Centers in the Florida Keys. Since 1972, we have been your small, “Boutique” Dive Center offering a relaxed and calm atmosphere where you can enjoy your time on the water. Our standard trips include two locations, with over an hour on each location.