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The number of active vessels in 2020 was 10 for longline fishery and 2 for purse seine fishery. With this fishing capacity, Korean tuna longline fishery caught 3,025 ton in 2020, which was 6% lower than that of 2019. The fishing efforts in 2020 were 4,981 thousand hooks. The fishing efforts averaged for 5 recent years (2016-2020) were 5,851 thousand hooks and distributed in the western tropical areas around 0-20°S as well as in the western and eastern areas around 20°S-40°S. Since 2015, some vessels have moved to the western tropical area between 5°N-10°S to fish for bigeye tuna and yellowfin tuna. In 2020, Korean longline vessels moved again to the eastern Indian Ocean to operate southern bluefin tuna. Korean tuna purse seine fishery in the Indian Ocean recorded 13,877 ton in 2020. In 2020, 2 vessels of Korean tuna purse seine fishery operated mainly in the western and central tropical areas around 10°N-10°S. The fishing efforts in 2020 were 610 sets, which mainly distributed in the western and central tropical areas around 40°E-70°E. In 2020, national scientific observers for longline fishery were not dispatched onboard for implementing observer program due to the worldwide spread of the COVID-19. Regarding purse seine fishery, regional scientific observers were dispatched onboard.
