The Great Blue Hole is a marine sinkhole at Lighthouse Reef in the Caribbean Sea, accessible only by boat from operators based in San Pedro or Dangriga, roughly seventy kilometres offshore. The site is classified for advanced divers: the cavern descends to forty metres and contains stalactites formed when the structure was above sea level. Visibility inside the hole can reach between twenty and forty metres. The surrounding reef supports Caribbean reef species including angelfish, parrotfish, and snapper, though the primary draw is the geological formation itself. Water temperature is stable and warm throughout the year.
80 operators
Fin maps 1 sites in Great Blue Hole (1 scuba diving sites and 1 snorkelling spots, with some suited to both).
