Know All Real Facts About | Deans Blue Hole

Deepest blue hole in the world

Deans Blue Hole is believed to be the deepest blue hole in the world and the second largest underwater chamber. Experts at Reeldivers and Vertical Blue, who've done dives at the site, report that: It's enclosed on 3 sides by a natural rock amphitheater, and on the 4th side by a turquoise lagoon and powder white beach. There's never any swell or waves inside the Hole, and visibility is usually between 50 100 feet. 

The Blue Hole dips some 663 feet into the ocean floor right offshore. In the surface, it's 80 x 120 feet but opens out after 60 feet into a cave with a diameter of at least 330 feet. 

It's located west of Clarence Town on Long Island, Bahamas and is also the site where the Freediving World Record was set in Apr 2007. Formation - Blue hole is a term for water-filled sinkholes with the entrance beneath the level of water.


They can be formed in different karst processes, for instance, by the rainwater soaking through fractures of limestone bedrock onto the water table. Sea level here has changed: for instance, throughout the glacial age throughout the Pleistocene epoch, some 15, 000 years ago, sea level was considerably lower. The maximum depth of most other known blue holes and sinkholes is 110 meters, that makes the 203 meters depth of Deans Blue Hole quite exceptional. 

Deans Blue Hole is approximately circular at the surface, with a diameter which ranges from 25 to 35 meters. After descending 20 meters, the hole widens considerably into a cave with a diameter of 100 meters. There are various freshwater-filled sinkholes on land which are deeper than Deans Blue Hole. 

These include the 270 m Boesmansgat in South Africa, Mexicos Zacatn at 335 meters and the 392 meters Pozzo del Merro in Italy. Fauna - there's a great variety of sea animals to be found inside Deans blue hole.

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