Bluntnose six-gill shark  (Hexanchus griseus)

Description

As its common name alludes, the bluntnose six-gill shark has a characteristically blunt rounded snout and six long gill slits on either side of its head, instead of the five that are usual amongst sharks (2). Other distinguishing features include its fluorescent green eyes, six saw-like teeth on each side of the lower jaw and the singular dorsal fin located close to the caudal fin (3). Colouring ranges from greyish-black to chocolate brown on the back, lightening to a greyish white underside, with a distinctive light stripe along the sides and white edging on the fins (4). Females tend to be slightly larger than males (2).

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