No. Page 



15. Number of seals seen per hour of effort in each square (areal unit) occupied by a 



research vessel in June 1968 in Alaska waters between Kodiak Island and long. 



158° W. The sides of each square measure 18.52 km. (10 nautical miles). 



Squares occupied for less than 0.5 hours are marked "X" 40 



16. Number of seals seen per hour of effort in each square (areal unit) occupied by a 



research vessel in June 1968 in Alaska waters fronn long. 160° W. to Bering Sea. 

 The sides of each square measure 18.52 km. (10 nautical miles). Squares occu- 

 pied for less than 0.5 hours are marked "X" 41 



17. Number of seals seen per hour of effort in each square (areal unit) occupied by a 



research vessel in July 1968 in Alaska waters near the eastern Aleutian Islands. 

 The sides of each square measure 18.52 km. (10 nautical miles). Squares occu- 

 pied for less than 0.5 hours are marked "X" 42 



18. Number of seals seen per hour of effort in each square (areal unit) occupied by a 



research vessel in August 1968 in Alaska waters near the eastern Aleutian Is- 

 lands, The sides of each square measure 18.52 km. (10 nautical miles). Squares 

 occupied for less than 0.5 hours are marked "X" 43 



19. Trackline of the M/V Pribilof from 27 June to 9 July 1968. The position of each 



seal sighted is shown by a mark (') just below the trackline, together with the 



total number seen 44 



20. Pregnancy rates and sample sizes, by age, of female seals collected in the eastern 



Pacific Ocean, 1958-66 48 



21. Percentage volume and percentage occurrence of principal food species in fur seal 



stomachs collected off Washington, 1967-68 53 



22. Locations where fur seal stomachs collected off Washington in November-Decem- 



ber 1967 and January-February 1968 contained Engraulis mordax (35 occur- 

 rences); Mallotus villosus (33 occurrences); and Sebastodes spp. (10 occur- 

 rences) 54 



23. Locations where fur seal stomachs collected off Washington in November-Decem- 



ber 1967 and January-February 1968 contained Anoplopoma fimbria (22 occur- 

 rences) and Gonatus fabricii (15 occurrences) 55 



24. Locations where fur seal stomachs collected off Washington in November-Decem- 



ber 1967 and January-February 1968 contained Thaleichthys pacificus (24 occur- 

 rences) and Loligo opalescens (17 occurrences) 56 



25. Locations where fur seal stomachs collected off Washington in November-Decem- 



ber 1967 and January-February 1968 contained Clupea harengus pallasi (16 

 occurrences) and Salmonidae (60 occurrences) 57 



26. Percentage volume and percentage occurrence of principal food species in fur seal 



stomachs collected off Alaska in 1968 62 



27. Locations where fur seal stomachs collected off western Alaska and in the Bering 



Sea in 1968 contained Salmonidae (11 occurrences) and Gonatus magister (14 

 occurrences) 63 



28. Locations where fur seal stomachs collected off western Alaska and in the Bering 



Sea in 1968 contained Mallotus villosus (12 occurrences) and Gonatopsis borealis 



(42 occurrences) 64 



29. Locations where fur seal stomachs collected in Gulf of Alaska in 1968 contained 



Mallotus villosus (14 occurrences) and Gonatopsis borealis (28 occurrences) 65 



30. Locations where fur seal stoniachs collected in Gulf of Alaska in 1968 contained 



Theragra chalcogrammus (15 occurrences) and Gonatus magister (21 occur- 

 rences) 



31. Locations where fur seal stomachs collected off western Alaska and in the Bering 



Sea in 1968 contained Bathylagidae (13 occurrences) and Theragra chalcogram- 

 mus (44 occurrences) 67 



32. Locations where fur seal stomachs collected off western Alaska and in the Bering 



Sea in 1968 contained Pleurogrammus monopterygius (34 occurrences) and 



Gonatus fabricii (37 occurrences) 68 



TABLES 



1. Kill of male seals, by year class, Pribilof Islands Alaska, 1947-66 4 



2. Unadjusted and adjusted kill of male seals, Pribilof Islands, Alaska, 26 June to 



5 August 1968 5 



3. Number of female seals to be killed and the number actually taken during a special 



kill of female seals, Pribilof Islands, Alaska, August 1968 5 



66 



