World’s deepest underwater sinkhole found in South China Sea

[embedded content] The deep blue hole called the “Dragon Hole” or “The Eye” by locals has set a new record for the deepest blue hole in the world.  According to Xinhua News, the Dragon Hole is 987 feet (300.89 meters) deep.  Researchers who have spent the past year exploring  and using an underwater robot, were able to determine the depth of the blue hole. Researchers found more than 20 species of fish in the upper part of the sinkhole but below 100 meters the water is oxygen-free or nearly oxygen free.  Therefore it’s unlikely there is any life much beyond the 100 meter mark.  The most well known and recognized blue hole, the Great Blue Hole of Belize is 300 meters across and 124 meters deep and the deepest sinkhole prior