16 



NORTH AMERICAN FAUNA 74 



Fig. 10. Walruses sighted in July (symbols as in Fig. 4). 



in northern Karagin Gulf at Cape Paklan and Korf Bay (Nikulin 1941) and on 

 Verkhoturov Island (Heptner et al. 1976). In the eastern Bering Sea, the 

 southernmost records for this month were at Amak Island (J. Sarvis, personal 

 communication), and east of the Pribilof Islands (R. A. Ryder, personal commu- 

 nication). Extralimital records were from the vicinity of Yakutat Bay in 1979 

 (D. G. Calkins, H. W. Braham, personal communication). 



August (Fig. 11) 



During August, the edge of the pack ice generally retreats northward to about 

 71°N in the Chukchi and Beaufort seas and to a lesser extent in the East Siberian 

 Sea. At this time most of the walrus population disperses northwestward to the 

 vicinity of Wrangell Island. Many animals also remain along the northern coast 

 of Chukotka and off the northwestern coast of Alaska, between Icy Cape and 

 Barrow. 



The extremes of distribution in the northwest in August have been near the 

 Bear Islands in the East Siberian Sea and at 74°22'N, 165 °W in the Arctic Ocean 

 (Anonymous 1965); in the northeast they have been near Herschel Island, Yukon 

 Territory and the Baillie Islands, Northwest Territories, in the Beaufort Sea 

 (Harington 1966). Southernmost records have been at Verkhoturov Island in 

 Karagin Bay (Nikulin 1941) and at Amak and the Pribilof Islands (Wilke 1942; J. 

 Sarvis, personal communication). 



