Huandao Jiaolong is lifted up from its carrier, before diving into the deep sea in Yalong Bay of Sanya city, South China's Hainan province, Dec 14, 2015. Huandao Jiaolong is one of a series of "Jiaolong" submersibles. The deep-sea submersible Jiaolong can dive to a depth of over 7,000 meters, having the greatest depth range of any manned research vehicle in the world.[Photo/IC]