流れ藻

From July to September, 1957 , the floating seaweeds around the Tusima-Higasi and the Iki Passages were surveyed four times on the facilities of the Fukuoka and the Saga Prefectural Fisheries Experimental Stations. The results are summarized as follows : 1) The species forming the floating seaweeds collected from this area appear almost similar to those of Tuyazaki region in the same season, as reported in the first part of this paper. 2) The relative abundance by weight of major species forming floating seaweeds of this area is also similar to the results obtained from the Tuyazaki materials in the same season (Fig. 5). 3) There was a small quantity of floating seaweeds in the Tusima Higasi Passage where the main stream of the Tusima Current runs through from the western Kyushu area to the Japan Sea. They were rather abundantly observed near the shore, probably along current-rips, as shown in Figs. 1-4. 4) From the results of the present surveys and the current investigations by the drift bottle method which were previously made by the Fukuoka and the Nagasaki Prefectural Fisheries Experimental Stations, there is considerable evidence, as mentioned in the first part of this paper, that the floating seaweeds in this area are not of origin of southern or western Kyushu area.