I'll take on the first one, and then maybe we'll have a joint answer on the second question, if you don't mind.
We talked a bit about prevention. There are really three layers to this, or three elements. Risk assessment is the first one. Sorry, I should say that understanding is the first one—understanding the species that might be a threat and what causes it to be a threat, and then using that information to put in a structured risk evaluation process that allows us to look, as Michelle mentioned earlier, at the likelihood of that animal becoming an invasive species in Canada and the consequence if it did. The likelihood covers a range of things—the arrival, the survival, the establishment, and the spread.
Really, knowledge is our key tool here, and then once we have that knowledge of what the relative level of risk is, we can undertake our prevention activities. Our experience with this, again, is that we take a highly leveraged approach. Often, if you have a series of community groups or an industry association you can work with, that's a very powerful way to get out a message about the risk to the constituency that needs to have that information.
It's a very case-specific thing. It's hard to generalize. If the vector you're worried about is maybe moving boats from one area to another, as it might be for something that Mr. MacAulay referred to—tunicates—then working with fishermen's associations and recreational boating groups is money well spent, especially if you can be very specific with them on when, where, and how they could modify their behaviour to prevent the organism from spreading.
I think it really starts with the understanding of the animal that might be a threat, and then having a good clear assessment of the risks and what it would mean, and that information then fuelling prevention measures. It's a sequence of activities that can really go to prevention.
On the second question, David, do you want to....?