Rainbow Fish, a submersible capable of diving to 11,000 meters, surfaces after an 18-hour research under a 6748-meter-deep survey location at the New Britain Trench of the Solomon Sea, Aug. 18, 2016. (Photo/Xinhua)
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Rainbow Fish, a submersible capable of diving to 11,000 meters, surfaces after an 18-hour research under a 6748-meter-deep survey location at the New Britain Trench of the Solomon Sea, Aug. 18, 2016. (Photo/Xinhua)
