Adults are benthic but occasionally pelagic. Feed mainly on other fishes (cod, haddock, pogge, sand-eels, herring, capelin), but also cephalopods, large crustaceans and other bottom-living animals. Slow growth rate and late onset of sexual maturity, halibut populations can be seriously affected by overfishing. Utilized fresh, dried or salted, smoked and frozen; can be steamed, fried, broiled, boiled, microwaved and baked.
Eastern Atlantic: Bay of Biscay to Spitsbergen, Barents Sea, Iceland and eastern Greenland. Western Atlantic: southwestern Greenland and Labrador in Canada to Virginia in USA.