The upper side is bluish while the lower side is white. Lives on sandy and rocky bottoms, where it hides. Lives comfortably from the surface to the great depths, in all the Mediterranean Sea. It is a night predator, feeding on crustaceans, squid and fish. It can snatch away big chunks of its big preys by turning its body repeatedly, like an screw.
Congers use to have circular scares in the head, caused by their favourite preys, the squids.
Larvaes turn into young congers in about two years.