A little less than 2 meters long, the head resembles that of a snake, with advanced nostrils and flexible jaws that allow you to swallow large fish: what is most striking, however, are the teeth, over 300, very sharp and arranged on 25 lines, a paraphernalia that makes escape to any prey impossible.

In short, it is an animal that must have contributed to feeding who knows how many legends about monsters and sea snakes. Recently a specimen was captured by a group of European Union researchers who, off the coast of Portugal, were conducting a study on various fishing techniques.

Image A close-up of Chlamydoselachus anguineus captured off the coast of Portugal, with its three hundred very sharp teeth. See also: fish with unexpected talents. |

An ancient predator. Although on board the oceanographic vessel there were biologists, scientists had some difficulty in accurately classifying the animal, which was finally identified as a collared shark (Chlamydoselachus anguineus), which is believed to inhabit the platforms and on the ocean embankments of the Pacific and Atlantic.

In very rare cases it has been observed by robotic rovers at a depth of 1, 300 meters, but it is not clear what its ideal habitat is. According to the researchers it belongs to an evolutionary line that makes it date back to at least 95 million years ago, perhaps even earlier.

Image The head resembles that of a snake. See also: 10 giant animals of the past. |

What is surprising is that he survived the extinction of the Cretaceous, when most of his closest "relatives" disappeared from the planet.

Like snakes. The few times he has been seen hunting has shown different behaviors than sharks, because he pounces on his prey swaying like a snake and, like snakes, C. anguineus can spend a lot of time between one meal and another, made mainly of cephalopods (especially squid) and small sharks.