JUNE 



BLACK MARLIN / 1,000 HOOKS 

 1965-1975 (JAPANESE FLEET) 



= <0.5 

 = 0.6-2.0 



2.1-5.0 

 >5.l 



JULY 



40* -f 

 32T 







170* 



170° 130" 140° 150° 160° 170° 180° 



Figure 14.— Distribution of average hook rales for black martin per 1,000 hooks effective effort (from Suzuki and Honma 1977): a. June-Seplember. b. October-January. 



c. February-May. 



14 



