What I would say—and I'll ask Trevor to add to this in terms of predator-prey relations—is that when you can't see it underwater, it's hard to notice exactly what's going on. It is a challenge.
We are seeking more and more to manage fisheries with an ecosystem approach and with understanding of the overall impacts of fisheries and of one stock on other stocks.
We have new bycatch rules. If you look at our integrated fisheries management plans, they will speak to the role of this fish in the ecosystem and the impacts on other fisheries. It is difficult to say, “for this area here is a total amount of tonnage of fish that you can take out, and there should be a mix”.
We still manage stock by stock, but we are seeking to do so with an understanding about the impact of the removal of that stock on other stocks.