Often called the great marbled sculpin. Found over rocky or shell-encrusted bottoms from shallow to moderately deep waters. It feeds primarily on crustaceans and mollusks. The male cabezon will not budge while guarding its nest and can even be touched by divers. Edibility is good; the flesh is bluish-green but turns white when cooked. The eggs of the cabezon are poisonous. Range is from Alaska to Central Baja.