Three subpopulations of Baird’s beaked whales are recognized in the western North Pacific (Sea of Japan, Okhotsk Sea, and Pacific Ocean), where these whales have been exploited for centuries. There are an estimated 1,100 Baird’s beaked whales in the eastern North Pacific, including about 228 (CV=51%) off the US west coast (Barlow et al. 2006, Caretta et al. 2006). Abundance in Japanese waters has been estimated at about 7,000 individuals (5,029 off the Pacific coast, 1,260 in the eastern Sea of Japan, and 660 for the southern Okhotsk Sea – Miyashita 1986; Kasuya 2002; Barlow et al. 2006). These are likely underestimates because visual survey methods often do not account for the fact that the whales dive for long periods and are inconspicuous when they surface (Barlow 1999). There is no information on trends in the global abundance of this species.
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