China's reasearch vessel Dayang Yihao, or Ocean One, docks at the Olympic Sailing Center in Qingdao, East China's Shandong province, Dec 11, 2011, after a scientific expedition conducted in the Indian, Pacific and Atlantic oceans. The expedition, kicking off on Dec 8, 2010, was the third and largest round-the-world ocean probe in the history of China's deep-sea exploration. (Xinhua/Li Ziheng)

China's reasearch vessel Dayang Yihao, or Ocean One, docks at the Olympic Sailing Center in Qingdao, East China's Shandong province, Dec 11, 2011, after a scientific expedition conducted in the Indian, Pacific and Atlantic oceans. The expedition, kicking off on Dec 8, 2010, was the third and largest round-the-world ocean probe in the history of China's deep-sea exploration. (Xinhua/Li Ziheng)