Bluntnosed Six-gilled Shark
Scientific Name: Hexanchus griseus
Family: Hexanchidae (cowsharks),
Size: > 5 metres
Hexanchus griseus have six gill slits (the majority of sharks have only five gill slits) and with only one dorsal fin set near the tail it is most distinctive. Mature specimens from 3.5 m to nearly 5 m total length (TL) spend all their lives in very deep waters from 500 m to 2000 m, with possible excursions to shallows waters at night to feed but very little is known about their behaviour. Mainly the juveniles and immature specimens are seen when caught from close inshore and in deeper waters from depth of 30 m to 500 m. These small specimen are rarely larger than 2.5 m ( 8') TL, @ 91 kg ( 200.5 lb). When I say small, they are compared to a very large stout bodied, round bluntly pointed headed, mature female of 4.82 m (15.4 feet) TL, and more than 650 kg (1432.6 lb). Smaller in size and weight among the predatory sharks only to the 7 m Great White shark, and the deep water Sleeper shark (Somniosus microcephalus) that grows to 6.4 m, and was also filmed at 2200 m deep.
Colours range from dark brown to dark silvery grey with large, opalescent eyes.
16 June 2009
First Report and Photograph by Leroy Kulczynski (Doonbeg)
Report by David Proudfoot on Planet Sea Fishing Catch Report
c. 13 October 2006
Sport angler Anton Kristiansen was out fishing with Turid Kvammen at Smøla, off the coast of Nordmøre, northwest Norway when he hooked and landed a Six-gilled Shark, Hexanchus griseus, called kamtannhaiin Norwegian. It measured 2.5 meters long and weighed 120 kg (264 lb). This shark is a deep water predatory species that is rarely caught by commerical fishermen and even less often by anglers.. BMLSS Sharks
I saw A six gill around July 25 1999. It was in the Gulf of Mexico (EB 160A), at 935 ft. I was on bottom in a Hardsuit. It was about 14-15 ft long. The suit video was on, and I do have a copy of it. The shark came out of the darkness, and passed within a couple feet of me. The video shows this very clearly, making identification easy. It was very exiciting.
Russ DeMille (Hardsuit pilot)
My name is Damion and I live in Texas. My occupation is commercial shrimping. I own my own trawler and occasionally
work between 200 and 300 fathoms. This past March through May 2000 I have caught and released approximately 12 sharks ranging in size from 8ft to 16ft off the east coast of Florida,between Ft.Pierce and Ft.Lauderdale. Also on the south side of Florida, between Key West and Dry Tartugus. But the largest of the 12 was caught around Desoto Canyon in the Gulf of Mexico south of Mobile, Alabama and Pensacola,Florida. If I find them any where else I'll let you know.
Sharp-nosed Seven-gilled Shark, Hepranchias perlo
Information wanted: Please
send any records of this fish, with location, date, who discovered it,
how it was identified, prevalence, common name and any other details to
Project EMail Glaucus@hotmail.com.
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