Bluntnose six-gill shark  (Hexanchus griseus)

Bycatch: In the fishing industry, the part of the catch made up of non-target species.
Caudal fin: The tail fin of a fish, used for steering, balancing or propulsion.
Dorsal fin: In fish, one of the unpaired fins found on the back of the body.
Nocturnal: Being active at night.
Ovoviviparous: Method of reproduction whereby the egg shell is weakly formed and young hatch inside the mother; they are nourished by their yolk sac and then born.

1. IUCN Red List of Threatened Species (October, 2005)
   http://www.redlist.org
   
2. Animal Diversity Web (October, 2005)
   http://animaldiversity.ummz.umich.edu/site/index.html
   
3. IUCN/SSC Shark Specialist Group (October, 2005)
   http://www.flmnh.ufl.edu/fish/Organizations/SSG/SSG.htm
   
4. Sixgill Shark - Hexanchus griseus - MarineBio.org (October, 2005)
   http://marinebio.org/species.asp?id=88
   
5. Fisheries Global Information System (FGIS) (October, 2005)
   http://www.fao.org/figis/servlet/species?fid=2003
   
6. IPOA-SHARKS (October, 2005)
   http://www.fao.org/figis/servlet/static?dom=org&xml=ipoa_sharks.xml