DESCRIZIONE
A self-propelled offshore fish farm (1) comprises at least one fish tank (2) with least two openings for allowing surrounding seawater to enter the fish tank (2) and a propulsion means for propelling the fish farm (1). There is also disclosed a method for operating a fish farm, said method comprising the steps of providing such a self-propelled offshore fish farm (1) and controlling the flow of water into the at least one fish tank (2).