The frilled shark is considered a living fossil, because of its primitive, anguilliform (eel-like) physical traits, such as a dark-brown color, amphistyly (the articulation of the jaws to the cranium), and a 2.0 m (6.6 ft)–long body, which has dorsal, pelvic, and anal fins located towards the tail.
One website, Moscow Times, said the pictures might not be a surprise to others who fish in deep waters “but the images are perfectly monstrous to your average land-lover”.