Hi, I did some dives to about -20m and little deeper in my search of fish in norway.. but I have to say that the best hunting was done in a right place rather than the right depth.. I saw nothing at the depth that I didnt see at about -10m.
Water was clear as it can be but cold.. Cod are plenty, but you better take mucho cooking recepies for you white flaky cod... as it might taste little dull after third day..
Pollack, plenty again, smallish, but some larger ones around, after few easy smaller ones I tended to let them swim by rather than track them with my gun.. I didnt see any wolf fish around.. but some beatiful marine life, jellies and all sort of things stuck on rocks.. So there is plenty to see under..
I think this year I will concentrate on UK waters in Cornwall and go for some more Bass.. as I think it is much better tasting than cod.. obviously my opinion only..
Have good trip!
Pekka