Staff members are on the way to an offshore yellowfin tuna breeding base by boat in Lingshui Li Autonomous County, south China's Hainan Province, on Sept. 17, 2025. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

An aerial drone photo taken on Sept. 17, 2025 shows staff members feeding tunas at an offshore yellowfin tuna breeding base in Lingshui Li Autonomous County, south China's Hainan Province. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

An aerial drone photo taken on Sept. 17, 2025 shows staff members feeding tunas at an offshore yellowfin tuna breeding base in Lingshui Li Autonomous County, south China's Hainan Province. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

This photo taken on Sept. 17, 2025 shows yellowfin tunas undergoing an experiment at the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences in Lingshui Li Autonomous County, south China's Hainan Province. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

This photo taken on Sept. 17, 2025 shows tunas vying for food at an offshore yellowfin tuna breeding base in Lingshui Li Autonomous County, south China's Hainan Province. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

A staff member feeds tunas at an offshore yellowfin tuna breeding base in Lingshui Li Autonomous County, south China's Hainan Province, on Sept. 17, 2025. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

Qin Chuanxin, a researcher at the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences, shows a specimen of yellowfin tuna in Lingshui Li Autonomous County, south China's Hainan Province, on Sept. 17, 2025. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

A staff member of the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences conducts scientific research on the breeding of yellowfin tunas in Lingshui Li Autonomous County, south China's Hainan Province, on Sept. 17, 2025. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

A staff member of the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences conducts scientific research on the breeding of yellowfin tunas in Lingshui Li Autonomous County, south China's Hainan Province, on Sept. 17, 2025. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)

A staff member of the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences conducts scientific research on the breeding of yellowfin tunas in Lingshui Li Autonomous County, south China's Hainan Province, on Sept. 17, 2025. In recent years, Hainan Province has accelerated the development of its fishery industry by giving full play to its advantages in marine fisheries.

Thanks to technological breakthroughs, the South China Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences established an offshore yellowfin tuna breeding base in Lingshui, which has achieved artificial spawning and hatching of yellowfin tunas. (Xinhua/Guo Cheng)