Southeast of Belize City and northeast of Hamanasi, the snorkeling in South Water Caye Marine Reserve is popular since this is the largest marine reserve in Belize. While snorkeling off South Water Caye about 120 feet offshore, keep an eye out for eagle rays, turtles, moray eels, southern stingrays, large grouper, barracuda, king mackerel, dolphins and several shark species. With visibility ranging between 60 to 100ft, snorkelers often have close encounters with eagle rays, southern stingrays, octopus and even dolphins. The Southern Barrier Reef offers several different snorkeling sites for both beginners and experienced snorkelers in a pristine environment.
To reach the snorkeling in Belize by air, fly into Belize City International Airport (BZE) which is located west of Belize City. Since there are few hotels near the airport and the airport is pretty far from the sketchy Belize City, you will want to arrive as early in the day as possible to meet your connection. There are two small inter-island airlines that serve many other destinations off-shore of Belize. Note, even if you reserve a specific inter-island flight at a specific time, only after you check-in with the inter-island carrier are you really assigned to an actual flight at an actual time. While there is a ferry service from downtown Belize City to some islands, there are only informal taxis (in personally owned vehicles) from the airport along slow roads thru run-down neighborhoods to the ferry dock, which is located in a very sketchy area. Hence, the ferry service does not tend to be a very popular option with tourists. When you are departing from Belize, the departure tax is included in the airline ticket, but make sure to verify.
Overall, South Water Caye Marine Reserve is the 2nd most popular snorkel dive spot of all 33 snorkeling dives in Belize.