For diving, make plans through the dive shop at Hamanasi Adventure and Resort [1] (tel. 501/520-7073, U.S. tel. 877/522-3483, www.hamanasi.com [2]). For snorkeling or fly-fishing, Noel Nuñez (tel. 501/523-7219 or 502/609-1991) is your man, located in his tour shack at the Watering Hole. Most guesthouses in Hopkins rent kayaks and other small craft.
Windschief Windsurfing School and Rental (www.windschief.com [3], open daily except Thurs. at 1 p.m.) has a nice selection of windsurfing boards of various sizes for rent and offers lessons for all levels.
AN’s Snorkeling Gear Rentals (tel. 501/523-7290) has snorkeling gear for US$5 per day and offers snorkeling trips; US$50–75 per person depending on group size. Bullfrog Tours (office next to Driftwood Pizza, tel. 501/669-0046) has boat charters and activities such as fishing, snorkeling, and caye hopping.
If you want to explore inland, let Charlton Castillo (tel. 501/661-8199 or 501/503-7799) be your guide to the Cockscomb [4] or Mayflower Bocawina National Park [5].
Links:
[1] http://www.moon.com/destinations/belize/the-southern-coast/south-dangriga/false-sittee-point
[2] http://www.hamanasi.com
[3] http://www.windschief.com
[4] http://www.moon.com/destinations/belize/the-southern-coast/the-cockscomb-basin/cockscomb-basin-wildlife-sanctuary
[5] http://www.moon.com/destinations/belize/the-southern-coast/south-dangriga/mayflower-bocawina-national-park