Commonly known as tusk, lives alone or in small shoals on rough, rock, gravel or pebble bottoms of both sides of the north Atlantic. In the Gulf of Maine, it is occasionally found
on mud with hakes, and in Norwegian waters, it often lurks among gorgonian corals. Seldom found on smooth, clean sand.
It is never found near the shore or at depths of less than 20-30 m. It tolerates a temperature from 0 to 100 C
The maximum size of the tusk is 110 cm (1.1 m) although tusk is more common from 60 to 95 cm in the eastern, and from 50 to 80 cm in the western North Atlantic.