I'll let Dr. Fleming talk about this as well. As we've indicated, there is certainly an opportunity for the current technology of the open-sea net pens to be improved upon in terms of mitigating some of these issues.
Escapees, of course, are not good for the industry. They're not good for the environment, and they're not good for the industry. Indeed, to be fair to the industry, the incidence of escapees in Canada appears to be declining. That's a response by the industry.
With respect to infectious diseases, one of the things that can be done do reduce the incidence of infectious diseases is to be cognizant of the densities that fish are being reared at. The higher the density, the more likely it is that a disease will manifest itself, and if it does, the more likely it is that it will proliferate.
Those are two things. With respect to waste accumulation on the bottom, there is fallowing. There are techniques that can be undertaken there, but there are also things such as in the Broughton Archipelago in B.C., for example, where there already has been a move by industry in response to a variety of different pressures to relocate some fish farms out of the migration pathways of some Pacific salmon populations.
To be fair, to be balanced, there has been some improvement on the part of the industry, and there are some ways to mitigate some of these issues.