ii i iiii i iii i i iii iii iiiii ii iii i i ii iiiii a+iihiiiiiiiiii 



Figure 25. — Aerial survey tracklines flown in the eastern Chukchi and western 

 Beaufort Seas on 26 and 29 August 1977; 1, 5, 8, 10, and 14 September 1977; and 

 3, 6, and 13 October 1977. Dots represent presence of bowhead whales: a total of 

 7 whales were counted in September and October with a mean group size of 1.2 

 (SD 0.4). No whales were observed in August 1977. 



Figure 27. — Aerial survey tracklines flown in the eastern Chukchi and western 

 Beaufort Seas on 26 and 29 August 1977; 1, 5, 8. 10, and 14 September 1977; and 

 3. 6, and 13 October 1977. Dots represent presence of white whales: a total of 89 

 whales were counted with a mean group size of 4.0 (SD 3.5). All but 3 of the 89 

 whales were observed on 10 and 14 September. 



100 km of Point Barrow; 2) south of Barrow along the coast 

 to Peard Bay, lat. 70°50'N, long. 158°30'W; and 3) west of 

 Point Barrow some 100 km into the Chukchi Sea. 



One white whale was observed during the 20-26 September 

 1976 survey (Fig. 26). Eighty-nine white whales were ob- 

 served on the 26 August-13 October 1977 survey (Fig. 27). 

 The westward migration of white whales past Point Barrow 

 appears to be predominantly offshore. 



No bowheads were seen on the 9-14 October 1975 survey 

 conducted over the southern Chukchi and northern Bering 

 Seas (Fig. 28). A. Berzin" reported seeing bowhead whales 

 near the Soviet coast of the Chukotka Peninsula during sur- 



"A. A. Berzin, TINRO, Magadan. U.S.S.R. 

 1979. 



pers. commun. 14 February 



Figure 26. — Aerial survey tracklines flown in the eastern Chukchi and western 

 Beaufort Seas on 20, 21, 22, 24, and 26 September 1976. The dot (highlighted by 

 an arrow) represents one white whale seen. 



Figure 28. — Aerial survey tracklines flown in the northern Bering and southern 

 Chukchi Seas on 9, 12, and 14 October 1975. No bowhead or white whales were 

 observed. 



veys conducted in October 1974 and 1975 (Fig. 29). His sight- 

 ing (in Fig. 29), commercial whaling records (Fig. 2), and our 

 results reported in Johnson et al. (1981) indicate that at least 

 some, and perhaps most, bowheads migrate to the northern 

 coast of Siberia in the autumn before moving south through 

 the Bering Strait and into the Bering Sea to their wintering 

 grounds. 



16 



