Sei whale  (Balaenoptera borealis)

Baleen: In some whales, the comb-like fibrous plates hanging from the upper jaw that are used to sieve food from sea water. These are often referred to as whalebone.
Dorsal fin: In fish, the unpaired fin found on the back of the body.

1. IUCN Red List (June, 2008)
   http://www.iucnredlist.org
   
2. Macdonald, D. (2001) The New Encyclopedia of Mammals. Oxford University Press, Oxford.
   
3. CITES (June, 2008)
   http://www.cites.org
   
4. Global Register of Migratory Species (June, 2008)
   http://www.groms.de
   
5. Carwardine, M., Hoyt, E., Fordyce, R.E. and and Gill, P. (1998) Whales and Dolphins. Harper Collins Publishers, London.
   
6. Horwood, J. (2002) Sei whale. In: Perrin, W.F., Würsig, B. and Thewissen, J.G.M. Eds. Encyclopedia of Marine Mammals. Academic Press, London.
   
7. Australian Government – Department of the Environment, Water, Heritage and Arts (June, 2008)
   http://www.environment.gov.au/cgi-bin/sprat/public/publicspecies.pl?taxon_id=34
   
8. The Whale and Dolphin Conservation Society (WDCS) (October, 2002)
   http://www.wdcs.org/dan/publishing.nsf/allweb/FBFCB6288FCCEE10802568F8004C205A
   
9. International Whaling Commission (October, 2002)
   http://www.iwcoffice.org/