Take a trip to the depths of the world's biggest underwater sinkhole

In 1971, underwater explorer and ocean conservationist Jacques Cousteau parked his ship in the middle of Lighthouse Reef, some 40 miles off the coast of Belize, to dive what would become one of the world's premiere scuba destinations: The Great Blue…
Source: Engadget | Take a trip to the depths of the world's biggest underwater sinkhole