The Kuroshio ocean current, originating in the Philippine Sea east of the Luzon Strait, enters the East China Sea (ECS) northeast of Taiwan Island, flowing along the outer edge of the ECS shelf, and turns eastward to the Pacific Ocean through the Tokara Strait (Figure 1). It directly affects hydrological conditions, the distribution of biota, and seabed sediments in the marginal seas of China, particularly the ECS.