They are not usually visible, but can be seen in some species, such as the frilled shark.

Frilled sharks are occasional bycatch in commercial fisheries but have little economic value.

Fish were present, including one of the first frilled sharks, Chlamydoselachus thomsoni.

The frilled shark is usually found close to the bottom, with one individual observed swimming over an area of small sand dunes.

This can be seen in the case of a frilled shark found in shallow waters near Japan.

The frilled sharks off southern Africa were described as a different species, C. africana, in 2009.

The most widely known species still surviving is the frilled shark (Chlamydoselachus anguineus).

This expansion pack has no extinct animals except the rare Frilled Shark.

Exhibiting several "primitive" features, the frilled shark has often been termed a "living fossil".

Many frilled sharks are found with the tips of their tails missing, probably from predatory attacks by other shark species.

The frilled shark (C. anguineus) was long thought to be the only extant member of its genus and family.

Frilled sharks appear regularly in the catches from bottom trawling, and when caught are used as food or for fishmeal.

Seldom observed, the frilled shark may capture prey by bending its body and lunging forward like a snake.

Garman, and numerous authors since, have advanced the frilled shark as an explanation for sea serpent sightings.

Frilled sharks usually live at a depth of 1,500 metres, and when this specimen was transferred to a marine park it died within a few hours.

A known predator of this species is the southern African frilled shark (Chlamydoselachus africana).

How the ostensibly weak-swimming frilled shark captures active, fast-moving squid is a matter of speculation.

The frilled shark has seldom been encountered alive, and thus poses no danger to humans (though scientists have accidentally cut themselves examining its teeth).

January 23 - A rare eel-like creature identified as frilled shark is discovered in Japan by fisherman.

Examples from this group include the cow sharks, frilled shark and even a shark that looks on first inspection to be a marine snake.

With its elongated, eel-like body and strange appearance, the frilled shark has long been likened to the mythical sea serpent.

Rather uncommon, the frilled shark has been recorded from a number of widely scattered locations in the Atlantic and Pacific Oceans.

The long jaws of the frilled shark are highly distensible with an extremely wide gape, allowing it to swallow whole prey over one-half its size.

It is currently believed that the sightings can be best explained as known animals such as oarfish, whales, or sharks (in particular, the frilled shark).

Family Chlamydoselachidae (frilled sharks)

The most widely known species still surviving is the frilled shark (Chlamydoselachus anguineus).

The frilled shark, Chlamydoselachus anguineus, is very different from the cow sharks, and it has been proposed that it be moved to its own order Chlamydoselachiformes.

The little-known goblin shark (Mitsukurina owstoni) and frilled shark (Chlamydoselachus anguineus) have been recorded from deep waters off Japan.

The frilled shark (Chlamydoselachus anguineus) is one of two extant species of shark in the family Chlamydoselachidae, with a wide but patchy distribution in the Atlantic and Pacific Oceans.