|Researched by||Morvan Barnes||Refereed by||Admin|
|Other common names||-||Synonyms||-|
At a glance, the sei whale can be easily be confused with the minke whale Balaenoptera acutorostrata but can be distinguished by having dark coloured flippers and a uniform blue-grey upper body. The sei whale can also be differentiated from Bryde's whale Balaenoptera edeni by having only a single prominent ridge on the rostrum.
Sei whales usually congregate in small groups of up to 5 individuals, although in feeding areas up to 30 have been seen together. It seldom breeches, and when diving, it does not show the tail flukes. It can remain submerged for up to 20 minutes (Kinze, 2002).
Bruyns, W.F.J.M., 1971. Field guide of whales and dolphins. Amsterdam: Publishing Company Tors.
Howson, C.M. & Picton, B.E., 1997. The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]
Jefferson, T.A., Leatherwood, S. & Webber, M.A., 1994. FAO species identification guide. Marine mammals of the world. Rome: United Nations Environment Programme, Food and Agriculture Organization of the United Nations.
Kinze, C. C., 2002. Photographic Guide to the Marine Mammals of the North Atlantic. Oxford: Oxford University Press.
National Biodiversity Network (NBN) Atlas website. Available from: http://www.nbnatlas.org. Accessed 01 April 2017
OBIS, 2018. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2018-04-21
Reid. J.B., Evans. P.G.H., Northridge. S.P. (ed.), 2003. Atlas of Cetacean Distribution in North-west European Waters. Peterborough: Joint Nature Conservation Committee.
Smith, T.D. (ed.), 2008. World Whaling Database: Individual Whale Catches, North Atlantic. In: M.G Barnard & J.H Nicholls, HMAP Data Pages. www.hull.ac.uk/hmap, 2008-03-13
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Last Updated: 24/06/2008