Jiaolong, China's manned submersible, returns after conducting its dive mission in the South China Sea, south China, April 29, 2017. Jiaolong conducted its third dive Saturday in the South China Sea during the second stage of China's 38th ocean scientific expedition. Spending nine hours and thirty-five minutes in water, the maximum depth of the Jiaolong's work this time was 2,930 meters below sea level. (Xinhua/Liu Shiping)
