(240708) -- SANYA, July 8, 2024 Photo by Xinhua/ABACAPRESS.COM) -- Fraser's dolphins swim in the waters east of Hainan Island, south China, July 6, 2024. A marine biodiversity expedition team has recently witnessed a large number of cetaceans in the waters east of Hainan Island, including short-finned pilot whales, Fraser's dolphins and rough-toothed dolphins. Among the cetacean species, many mother-child pairs have been spotted. Photo by Xinhua/ABACAPRESS.COM/Zhang Liyun)