As a leader in salmon aquaculture, Norway has enacted some of the strictest regulations for sea lice management. In 2017, the Norwegian government implemented the so-called “traffic light system” (TLS) with the aim to promote the growth of the industry while improving environmental sustainability by monitoring the impact of sea lice on wild salmonids. The TLS regulates production capacity in Norway's 13 production zones, based on estimated sea lice-induced mortality of wild salmonids, assigning traffic light colours: green for those regions that can increase capacity, red for those regions that face reductions. Farmers in zones repeatedly facing reductions are under significant pressure, consequently, the TLS has become a subject of contentious debates.