The Northern and the Atlantic Ocean Catfish

Northern Ocean catfish (Anarhicas Denticulatus)
Atlantic Ocean catfish (Anarhicas lupus)

Both species of ocean catfish are bottom feeders, and can be found on depths of as much as 600 meters. They feed on shells, sea urchins and crustacean, which it crushes with sharp teeth. The species thrives in the northern areas of the Atlantic and the Pacific.