Blue hole is called a sinkhole filled with water.
Chinese scientists claim that the Dragon hole (longdong area) to a depth of up to 300 meters. The facility is located near a coral reef Yongle, uninhabited Paracel Islands.
Previously it was considered the most deep Dean’s Blue hole in the Bahamas (202 meters). Nevertheless, the Chinese need to be confirmed by international experts.
Locals believe that the dragon East is mentioned in the XVI century “journey to the West” where the monkey king sun Wukong obtains from the undersea dragon Kingdom magic stick.
Chinese scientists explored the blue hole with the help of an underwater robot and sensor depth. In the upper parts of the holes found more than 20 species of marine animals, but at a depth of 100 meters, where almost no oxygen, disappears, and the life.
Blue hole is called a sinkhole, filled with water and located below sea level. Blue hole, presumably, was formed as a result of various karst processes. Then, when the sea level rose to its current level, a funnel of steel underwater caves. The name blue hole was due to the contrast of deep dark blue water and the lighter water around.
