To answer your question, at the moment the jury is out as to whether net pens can be brought to a level of not having an impact on wild salmon in particular or on other parts of the environment. The fundamental issue there is disease transfer. There has not been enough research at all to determine the long-term impact of diseases that come from fish farms on wild fish stocks, wild salmon stocks. Until we know what that is, the question is to some extent unanswerable.
We know that some farms and series of farms are placed on particularly important wild salmon migration routes. In theory, you could say to move them off those routes as a first interim measure, and there are costs to that, of course. If it's found that disease is far more widespread or could spread much more easily than sea lice does, for example, then the problem we have on our hands is whether or not there is an appropriate place in the ocean to put net pens.
We're calling for more research into those issues of disease and sea lice and for a longer-term transition into closed containment. That may take some time, but we believe that it has to happen and that the research has to be done to determine the long-term impact on wild salmon stocks.