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SC/69A/ASI/17/rev1
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Resource ID
19954
Access
Open
Document Number
SC/69A/ASI/17/rev1
Full Title
Cruise report of the cetacean sighting survey in the southwestern Sea of Okhotsk in 2022
Author
P.S. Gushcherov, I.A. Naberezhnykh, A.N. Bashtovoy, M.D. Kenin, O.N. Katugin, I.F. Belokobylskiy and Tomio Miyashita
Authors Summary
Summary to come
Publisher
IWC
Publication Year
2023
Abstract
The cetacean sighting survey was conducted in the southwestern part of the Sea of Okhotsk in 2022. The vessel is a stern trawl type research vessel with a barrel for observation. The objective of the survey is to obtain information on distribution and abundance of large whales using the normal closing mode. The period of survey was from August 4 to September 4 (32 days) in the southwestern part of the Sea of Okhotsk in coordinates are 44°00N and 50°00N to 142°00E and 150°00E. During the research distance of 1438,03 n.miles by closing mode for large cetaceans in the research area and 590,52 n.miles by passing mode during transit. Over the entire period of research, the following species of cetaceans were confirmed: common minke whale (7 schools – 8 animals), North Pacific right whale (1-2), humpback whale (1-1), fin whale (24-36), sperm whale (7-7), killer whale (1-6), Baird’s beaked whale (5-29), Pacific white-sided dolphin (13-219), Dalli type Dall's porpoise (12-33), truei-type Dall’s porpoise (3-8), unidentified type Dall's porpoise (147-545), unidentified dolphin (1-6), unidentified large cetacean (12-13), unidentified small cetacean (2-2).