The sei Whale
(pronounced ‘sigh’) is among the largest of whales in the
north Pacific - only the fin, sperm and blue whale are longer.
The total length of adults is 14-18 meters (Wilson and Ruff
1999). The sei whale feeds on
krill, copepods and small fish by gulping and skimming the
surface. They will sometimes gather in large numbers to feed
but more often they occur in small groups of 2-5 individuals.
They are quite fast and agile for a large whale. Cetacean
taxonomists recognize two subspecies of sei whale - the
Northern Hemisphere B. b. borealis and the Southern
Hemisphere B. a. schlegelii (Wilson and Ruff 1999).
Weir, C. R.,
C. Pollock, C. Cronin, S. Taylor. 2001. Cetaceans of the
Atlantic Frontier, north and west of Scotland. Continental
Shelf Research 21: 1047–1071.
Wilson, D. E.
and S. Ruff 1999. The Smithsonian book of North American
mammals. University of British Columbia Press, Vancouver, BC