The deepest blue hole is located in Bahamas and is 202 meters deep (663 ft.) and is called Dean’s Blue Hole. Looking at the pictures the blue holes look like a fantasy underworld where the colors are beautifully mixed up. Too bad only professionals can explore it and enjoy the beauty of the blue underwater caves. Other beauties of the underwater that everyone can visit are the fabulous Red Sea Star restaurant in Israel, located 6 meters under the sea.
Via National Geographic.