I think different members of the panel would probably answer the different questions that you've posed there. I'll just answer the first one on the regulations in British Columbia for open-net pen salmon farms.
How I would frame it is that there are a lot of regulations, but in the crucial areas where there are environmental impacts, they are either too weak or have no enforcement provisions whatsoever. The most widely publicized environmental impact to date has been the effect of sea lice generated in open-net salmon farms on wild juvenile salmon in the vicinity. On that issue, there is only a provincial policy. It's a policy that isn't effective at removing those lice from the farms. It's a policy that has no enforcement mechanism whatsoever, and no salmon farm has ever been charged or convicted in relation to anything having to do with sea lice. There is a huge environmental problem and no effective regulation whatsoever.
I'll leave it to others on the panel to tackle the other two questions you posed.