Thanks, Anne.
Basically, I think ballast water was historically a very significant source for invasive species, aquatic invasive species especially, and certainly foreign species that arrived. But I think, as Anne pointed out in her talk, subsequent to 2006, we haven't seen, or haven't detected, I should say, any new species that we attribute to that vector. However, the water garden, the aquarium, trade is an emerging and very real threat.
I think what we're going to see in the coming years is that ballast water is still very significant, and if in any way the legislation changed, I think that could be a prominent vector, but for the moment I think we're probably seeing a transition.