The results of drift bottle and drift card experiments in the Bohai Sea and Huanghai Sea obtained by researchers of the Institute of Oceanology

Academia Sinica from 1975–1980 are reported in this article. Of over 50

000 bottles and cards released

around 10

000 were recovered. The results gave some convincing evidences for the existence of the Huanghai Sea Coastal Current

the Huanghai Sea Warm Current

the cyclonic movement around the northern Huanghai Sea Cold Water Mass

the anticyclonic eddy in the area near the Shidao-Qingdao coast and the flow of some of the Huanghai Sea water to the Japan Sea and to the North Pacific off Tokyo. The results show that the drift bottles and cards are still useful for getting the flow pattern of enclosed and semi-enclosed seas.