South Water Caye Marine Reserve is a paradise for kayaking and snorkeling in Belize. On Belize’s Southern Barrier Reef, the 117,875 acre reserve is dotted with beautiful little cayes and teeming with marine life. It’s a UNESCO World Heritage Site that is part of the longest barrier reef in the Western Hemisphere, stretching approximately 1,000 km (621 mi) from the Yucatan to the Bay Islands in Honduras.