“In the meantime, it’s already become an important source of income for some fishermen in the north. The problem is that it may be destroying the fishing stock.”
Dare I say the obvious??? Harvest it. Drive it to extinction.
Ship them to Japan!
Heck, I imagine after reading this there is going to be a swarm of Japanese seafood buyers on their way to Norway. Those things are expensive here! Restaurants pay big money for good specimens.
Way above my budget.
Yeah, aren’t the enviro-geeks usually worried about over-fishing, over-harvesting driving some species or other to extinction? This would seem to be a perfect opportunity to try it intentionally. (And get some good seafood in the bargain)