A staff unties the rope for the vessel Haiyang-6 at a port in Guangzhou, capital of China's Guangdong Province, June 26, 2017. Chinese ocean scientific research vessel Haiyang-6 set out Monday on a 240-day expedition in the Pacific Ocean, with five foreign trainees on board. The vessel departed from China's southern province of Guangdong, heading for the Western Pacific to conduct deep-sea geological surveys for climate change, biological and environmental research. (Xinhua/Wang Pan)
