|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).
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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.
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.
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Bristol Regional Environmental Records Centre, 2017. BRERC species records recorded over 15 years ago. Occurrence dataset: https://doi.org/10.15468/h1ln5p accessed via GBIF.org on 2018-09-25.
Merseyside BioBank., 2017. Merseyside BioBank (verified). Occurrence dataset: https://doi.org/10.15468/ar0p6s accessed via GBIF.org on 2018-10-01.
NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
Norfolk Biodiversity Information Service, 2017. NBIS Records to December 2016. Occurrence dataset: https://doi.org/10.15468/jca5lo accessed via GBIF.org on 2018-10-01.
OBIS (Ocean Biogeographic Information System), 2021. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2021-05-06
South East Wales Biodiversity Records Centre, 2018. SEWBReC Mammals (South East Wales). Occurrence dataset: https://doi.org/10.15468/atlxpp accessed via GBIF.org on 2018-10-02.
South East Wales Biodiversity Records Centre, 2018. Dr Mary Gillham Archive Project. Occurance dataset: http://www.sewbrec.org.uk/ accessed via NBNAtlas.org on 2018-10-02
Suffolk Biodiversity Information Service., 2017. Suffolk Biodiversity Information Service (SBIS) Dataset. Occurrence dataset: https://doi.org/10.15468/ab4vwo accessed via GBIF.org on 2018-10-02.
Whale and Dolphin Conservation, 2018. WDC Shorewatch Sightings. Occurrence dataset: https://doi.org/10.15468/9vuieb accessed via GBIF.org on 2018-10-02.
This review can be cited as:
Last Updated: 24/06/2008