ECOLOGY AND BIOLOGY OF THE PACIFIC WALRUS 



19 



Fig. 13. Walruses sighted in October (symbols as in Fig. 4). 



number of animals continues to use Round Island in Bristol Bay throughout 

 October, 



The extremes of range in the north in this month are about 178 °E, in Long 

 Strait (Anonymous 1965), about 74^40^, 173°20'W (R. V. Miller, personal 

 communication), and Herschel Island, Northwest Territories (Porsild 1945). In 

 the south, on the Siberian coast, there have been sightings about 60 km east of 

 Cape Navarin, off Anastasia Bay, at Bogoslov Island, near Cape Vitgenshtein, 

 and in Olyutorskii Bay (V. N. Gol'tsev, personal communication). On the 

 Alaskan side, no sightings have been reported south of northern Bristol Bay (J. 

 Clarke, H. W. Braham, personal communication). 



November (Fig. 14) 



The mean edge of the pack ice in November is in or just south of Bering Strait, 

 and most of the walrus population probably is concentrated between it and St. 

 Lawrence Island for much of the month. Unfortunately, there are few data for 

 November on which to base judgment. For most of the month, large herds of 

 several thousand animals remain on and near Big Diomede, Arakamchechen, St. 

 Lawrence, and the Punuk islands, but I have no sightings from the Soviet area 

 south of Arakamchechen and very few from the Alaskan side south of St. 

 Lawrence Island. The Meechken and Rudder hauling grounds in northern Gulf 

 of Anadyr are not occupied in November, although the Round Island hauling 

 ground in northern Bristol Bay continues to be used (J. Faro, personal com- 

 munication). 



