The Great Blue Hole is a large submarine sinkhole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll 70 km from the mainland and Belize City. The hole is circular in shape, over 300 m across and 124 m deep. It was formed about 15 thousand years ago.
This is a very popular spot among s scuba divers, who are lured by the opportunity to dive in crystal-clear water and meet several species of fish, including giant groupers, nurse sharks and several types of reef sharks such as the Caribbean reef shark and the Blacktip shark. Other species of sharks, like the bull shark and hammerheads, have been reported there, but are not regular sightings.
Usually, dive trips to the Great Blue Hole are full-day trips, which include one dive in the Blue Hole and two further dives in nearby reefs. Recently diving has also been offered from the island Long Caye in the Lighthouse Reef only a couple of miles away from the Great Blue Hole. They offer 2 dives in the Blue Hole: North side and South side.
Temperature in Belize is generally warm all year long, except for the scattered rain showers. The temperature of its waters dance at around 24 degrees Fahrenheit which makes dives comfortable without the fear and need to bathe in a cold period. Although Belize experiences rainy days from June to August and sunny days from February to May; such weather changes should give no effect on with scuba diving. These extremes in weather, however, could greatly affect those people who are looking out for a day of looking into the tourist attractions on land.