Photo taken on May 5, 2017 shows Jiaolong, China's manned submersible, in South China Sea. Jiaolong discovered a collection of polymetallic nodules in Puyuan Seamount in the South China Sea on Friday . (Xinhua/Liu Shiping)
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Photo taken on May 5, 2017 shows Jiaolong, China's manned submersible, in South China Sea. Jiaolong discovered a collection of polymetallic nodules in Puyuan Seamount in the South China Sea on Friday . (Xinhua/Liu Shiping)
