Bluntnose sixgill shark

Bluntnose sixgill shark
Drawing by Dr Tony Ayling
Conservation status
Near Threatened
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Hexanchiformes
Family:	Hexanchidae
Genus:	Hexanchus
Species:	H. griseus
Binomial name
Hexanchus griseus (Bonnaterre, 1788)

Template:Sharksportal The bluntnose sixgill shark, Hexanchus griseus, is the largest hexanchoid shark, growing to more than 4.8 m (15.5 ft) in length.

Teeth of the bluntnose sixgill shark.

The bluntnose sixgill shark is ovoviviparous and has the largest litters of any hexanchoid, ranging from 22 to 108 pups, each about 70 cm (28 inches) long. This species typically inhabits depths greater than 90 m (300 feet), and has been recorded as deep as 1,875 m (6,150 ft). Like many deep-sea creatures, the bluntnose sixgill is known to undertake nightly vertical migrations (travelling surfaceward at night, returning to the depths before dawn).

References

• Template:IUCN2006 Database entry includes justification for why this species is near threatened
• "Hexanchus griseus". Integrated Taxonomic Information System. 23 January. {{cite web}}: Check date values in: |date= and |year= / |date= mismatch (help)
• Froese, Rainer; Pauly, Daniel (eds.) (2005). "Hexanchus griseus" in FishBase. 09 2005 version.

External links

• Information on H. griseus from ReefQuest Center for Shark Research