Dean 's Blue Hole: the World' s Deepest Underwater

Dean 's Blue Hole is the world' s deepest underwater (salt water) blue hole. Dean 's Blue Hole is located to the turquoise shores of Long Island, Bahamas (which is probably the most scenic island in the Bahamas) Dean' s Blue Hole descended to the astonishing depth of 202 meters (which is about 663 feet).