The 'Dragon Hole,' located in in the South Chin Sea, is the deepest blue hole on the planet. At 987 feet, t's so deep it could even swallow the Eiffel Tower whole. Thought the hole has been known about for centuries, the depth has just recently been determined. Blue holes are basically just ...

The world has a new deepest blue hole in the China Sea. Sinking to 987 feet, this opening completely obliterates the old record of 663 feet held by Dean's Blue Hole in the Bahamas. Blue holes are simply massively deep sinkholes in the ocean that plummet hundreds of feet down. This one in ...