Table 1. --Numbers of sea lions, Prince William Sound-Kenai district, 1056-57, determined from photos 

 [* indicates visual estimate; ** pups included in adult counts] 



Rookery and 

 code number 



1/ 



Adults Pups Total Adults Pups Total Adults Pups Total Adults Pups Total 



1956: 



Survey 1, July 21-22 



1. Chiswell Island 1,459 564 



2. Chugach Island 8 



3. Cape Cleare 1 



4. Danger Island 249 49 



5. Elizabeth Island 108 21 



6. Point Elrington 25 6 



7. Gore Point 195 26 



8. Cape Junken 12 



9. Latouche 



10. Needles 179 16 



11. Nuka Point 



12. Pearl Island 687 50 



13. Puget Cape 20 



15. Pye Islands 1,415 368 



16. Seal Rocks (Kenai) . . 450 49 



17. Seal Rocks (Prince 



William Sound) 162 21 



19. Wooded Island 466 213 



Total 5,436 1,383 



1Q57: 



Survey 1, Mar 



1. Chiswell Islands.... 4,715 



2. Chugach Island 



4. Danger Island 75 



5. Elizabeth Island 



6. Point Elrington 200 



7. Gore Point 



8. Cape Junken 



9. Latouche 



10. Needles 190 



11. Nuka Point 



12. Pearl Island 12 



13. Puget Cape 



14. Perry Island 80 



15. Pye Island 1,050 



16. Seal Rocks (Kenai) . . 100 



17. Seal Rocks (Prince 



William Sound) ... 



18. Cape St. Elias 



19. Wooded Island 810 0_ 



Total 7,232 



,023 

 8* 

 1* 

 298 

 129 

 31 

 221 

 12* 



195 







7 37 



20 



,783 



4 99 



183 



679 



Survey 2, Sept. 1-2 

 1,578 351 1,929 



6 6* 



225 225* 



6 6* 



0* 



Survey J, Dec. 14 

 4,220 539 4,759 





 150 



0* 

 150* 



0* 







340 2,047 



2j556 







550 









 165 





 1,431 



1,357 



0* 



550* 



0* 



0* 

 165 



0* 



35 1,466 



6,819 



7,723 



1/ Code numbers refer to map in figure lA. 



Surveys were made with different degrees 

 of completeness. At times a rookery was not 

 included in a survey because weather condi- 

 tions prevented flying in the area of that 

 rookery. At other timesonly the major rooker- 

 ies were visited. The most complete coverage 

 was in 1957 on survey 7 when all rookeries 

 and almost all known hauling areas between 

 Cape St. Elias and the Islands of the Four 

 Mountains, which form the eastern and western 

 boundaries of the areas surveyed, were cov- 

 ered. 



Tables 1 to 6 probably include the most 

 important sea lion rookeries and hauling 



areas, but undoubtedly other localities could 

 be added to the list, such as areas where 

 no breeding takes place and sea lions only 

 haul out. These areas change as sea lions 

 move in search of food or are disturbed. 



VARIATIONS IN COUNTS 



The sea lion census technique developed in 

 our studies will give the number of animals 

 on a rookery at the time of a survey quite 

 accurately, but the fraction of the total popula- 

 tion that photographed animals represent will 

 not be known because of sea lions that may 

 be absent from the rookery, for example, 

 when feeding. 



