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The bluntnose sixgill is a species of sixgill sharks, of genus Hexanchus, a genus that also consists of two other species: the bigeye sixgill shark (Hexanchus nakamurai) and the Atlantic sixgill shark (Hexanchus vitulus). Through their base pairs of mitochondrial genes COI and ND2, these three species of sixgills widely differ from one another.
The sixgill sharks are a genus, Hexanchus, of deepwater sharks in the family Hexanchidae. These sharks are characterized by a broad, pointed head, six pairs of gill slits, comb-like, yellow lower teeth, and a long tail. The largest species can grow up to 8 m long and weigh over 600 kg (1320 lb). [3]
The body of this shark is small, slim, and fusiform in shape. As the name suggests, this shark has six gill slits, unusual among most shark species. The head is narrow and somewhat flattened, and the mouth contains 5 rows of large, comb-shaped teeth. This shark's single dorsal fin is pushed back towards the caudal fin, and is behind the pelvic ...
Frilled sharks contain only two extant species of deepsea creatures which are typically weakened in areas closer to the surface. The most widely known species still surviving is the frilled shark , known as a living fossil, along with the Southern African frilled shark , found along coastal areas of South Africa.
Officials believed that the shark was a sixgill, and that by removing it from the water, the fisherman had violated state law. But the fisherman argued that the shark was a distinct species: a ...
The sixgill sawshark, Pliotrema warreni is a sawshark of the family Pristiophoridae. Presence of six pairs of gill slits highlights this genus among sharks; outside Hexanchiformes order, Pliotrema is the only shark genus with more than five gill slits. Unlike other sawsharks, the barbs on this shark's rostrum continue onto the sides of the head ...
A team of scientists recently captured the elusive bluntnose sixgill shark, a deep-sea fish that has been on Earth before dinosaurs, on film.
A reclusive deep-water species that’s generally found on the coast, Washington Department of Fish and Wildlife (WDFW) biologists think that sixgill sharks come into Puget Sound to pup.