most nets are lost in deeper fishing areas between to metres but also in cod fisheries in relatively shallow waters however the tac system for cod northeast arctic and coastal does not restrict the overall catches of coastal cod the norwegian coastal cod north is recognised as a stock complex genetic studies indicate that some of the spawning components along the coast could be local stocks more or less isolated from coastal cod in neighbouring areas the challenge for the management is therefore both to keep the total stock complex at a productive level and in addition to give protection to potentially vulnerable local stocks