the proportion of striped marlin was quite high even in Jajiuary. 

 month in these three areas are summarized in table 101. 



The changes from nnonth to 



Table 101. --Comparison of the percentage composition of 

 the spearfish catch (35° to 40° N. , 150° to 

 160° E.; 30° to 35° N., 150° to 160° E. ; 

 northeastern sea area) 



In addition to these seasonal changes, the cheinges in the composition of the spearfish 

 catch at different latitudes are also remarkable. These fluctuations are shown in table 102. 

 This table shows that from October on the striped marlin rapidly move from north to south and 

 the broadbill then nnoves south slb if following them. 



Table 102. --Percentage composition of the spearfish catch 

 by month and by latitude (35° to 40° N. , 150° 

 to 160° E.) 



As the foregoing shows, the principal elements in the catch in this sea area are the 

 spearfishes, led by the striped marlin and the broadbill, ajid the albacore. The rakudazanne 

 (Isurus nasus) also has considerable significance in the catch. Some bigeye tuna are also taken, 

 but the other tunjis have hardly any significance as an object of the fishery. The fishing season is 

 about half the year from September to January. At the beginning of the season striped marlin 

 are abundant ajid there are also many shaurks taken. With the passage of time the broadbill sword- 

 fish catch increases, and from December on this species is the principal item in the catch. In 

 December the albacore catch also increases, and considerable numbers of these fish are taken. 



129 



