An aerial drone photo taken on April 17, 2025 shows a deep-sea intelligent aquaculture vessel berthed at the port of Beihai yard in Qingdao, east China's Shandong Province. A 150,000-tonne deep-sea intelligent aquaculture vessel was delivered for use Thursday in east China's port city of Qingdao. The ship-borne smart aquaculture system is expected to have an annual output of 3,600 tonnes of high-quality fish. The breeding cabins can be used to cultivate fish species such as large yellow croaker and salmon. (Xinhua/Li Ziheng)