aummer season. In general the fishing is most active in the southern part of this sea area at the 

 beginning of the fishing season and with the passage of time the center of the fishing grounds 

 gradually shifts to the northward. In the middle of the season the grounds are centered off Suo, 

 aJid at the end of the season the Hokasho area becomes the center. There are also seasonal dif- 

 ferences in the composition of the catch, with white marlin abundant at the beginning of the 

 season, striped marlin increasing toward the middle of the season, and black marlin gradually 

 increasing toward the end. However, in the overedl picture white marlin are the most abundant. 

 Table 4 3 shows the changes in the fishing situation from month to month. 



Table 43. --Catch of the harpoon fishery, Suo, 1934 ajid 

 1943 (numbers of fish) 



Note: The upper figures are for 1934, the lower figures for 1943. 

 marked decline in 1943 is due to the war. 



The 



At first the harpoon fishery was operated almost entirely by Japanese emigrants . 

 There was, in addition, a flourishing longline fishery in this sea area carried on for the most 

 part by Formosans. The catch of this longline fishery was mainly sharks, such as the hammer- 

 head, yashibuka, dotabuka, and threshers, and few tunais or spearfishes were taken. The fish- 

 ing ground and fishing season coincided completely with those of the haurpoon fishery. 



At about the tinne the harpoon fishery connes to sui end, black tuna migrate into the 

 southern part of this sea area, and by the middle of June they are taken all over the area. In 

 the beginning of the season the fishing is comparatively concentrated, but toward the end t>f the 



80 



