Photo taken on Aug 22, 2016 shows an aquaculture farm at Zhifu island sea area of Yantai, east China’s Shandong province. So far this year, the city’s fishery output value and aquatic products output have reached 10.64 billion yuan (about $1.604 billion) and 663,000 tonnes respectively. [Photo/Xinhua]

Photo taken on Aug 22, 2016 shows an aquaculture farm at Zhifu island sea area of Yantai, east China’s Shandong province. So far this year, the city’s fishery output value and aquatic products output have reached 10.64 billion yuan (about $1.604 billion) and 663,000 tonnes respectively. [Photo/Xinhua]

A fishing boat sails in an aquaculture farm at Zhifu island sea area of Yantai, east China’s Shandong province, Aug 22, 2016. [Photo/Xinhua]

A fishing boat sails in an aquaculture farm at Zhifu island sea area of Yantai, east China’s Shandong province, Aug 22, 2016. [Photo/Xinhua]