Coast by night, retreat by day: Repetitive sardine migration pattern, according to research in South Korea

It was found that the daytime and nighttime distribution areas of sardines were different. The National Institute of Fisheries Science announced on July 20 that it analyzed the movement of sardines that appeared in the southern coast and confirmed that they tended to be distributed inside the coast at night and outside the coast during the day. This was done through the scientific fish finder of the fishery scientific research vessel that surveys the wide sea area of the movement of sardines that visited the southern coast from April to May and the moored scientific fish finder (WBT, sonar-based fish detection equipment) installed near the coast. it has been revealed Looking at the movement of sardines recorded by a mooring-type scientific fish finder installed at a depth of about 9m off the coast of Tongyeong, Gyeongsangnam-do, the fish signal of the sardines is strong at night (7:00 p.m. to 6:00 a.m. the next day), from sunset to sunrise the next day. has been detected However, ...