Pollacks are predator fish; they eat crustaceans and fish. They like to swim in the vicinity of ship wrecks, drilling platforms and rocky coasts. Pollacks have a good sense of hearing. When scuba divers are busy on the bottom, pollacks are often attracted by the noise. Young pollack are regularly found in eel traps located in the harbor of IJmuiden. They probably float in as eggs and larvae and migrate north later on.