60' 



59' 



58' 



57' 



56' 



55= 



54'*- 



Figure 2.— Transects in the eastern Bering Sea and outer Bristol Bay where exploratory fishing was carried out in the 8 yr selected for 

 study to determine the distribution of sockeye salmon in offshore area of Bristol Bay. (See Appendix Table 1 for source of data.) 



700- 



600- 



gsoo- 



I 



' JUNE 28 



;<tOO-| 



'300- 



2 

 o 



5200- 



100- 



ST. PAUL ISLAND 

 JUNE 27 

 < ST. GEORGE ISLAND 



JUNE 26 



1 JUNE 25 



I JUNE 17 



10 20 30 40 50 60 70 80 90 100 



NUMBER OF FISH/24 SHACKLES OF NET/ 12 HR FISHING 



and then decreased with increasing distance offshore 

 (Fig. 6). This is consistent with the pattern of dis- 

 tribution along the long. 170°W transect. Catches 

 near the Pribilof Islands were again small. North of 

 the Pribilof Islands, however, catches were large but 

 decreased at locations farther offshore toward 

 Nunivak Island (Fig. 7). 



The above results show that large concentrations of 

 sockeye salmon returning to Bristol Bay occur in two 

 bands: one in the offshore waters between the Aleu- 

 tian and Pribilof Islands and the other in waters north 

 of the Pribilof Islands. 



Catches along the transect between Cape Mord- 

 vinof and Nunivak Island in 1941 also show two bands 

 or regions of heavy abundance (Fig. 8). This pattern of 



Figure 3. — Gill net catches of sockeye salmon along approxi- 

 mately long. 170°W, 17-28 June 1958. Each shackle of net was 

 about 50 fathoms. (See Appendix Table 1 for source of data.) 



