At this moment, mostly in the Atlantic, on the issue of how we implemented the dynamic management, it's done through aerial surveillance. We have the planes from DFO and Transport Canada. We're overseeing the area. It's indeed one way to locate those whales, but there are always limitations to each of those technologies, and for aerial surveillance they are weather conditions and daylight.
What we're looking to do is to complete the aerial surveillance with the acoustic surveillance. What is very good is that in Canada we have led technology development in this area with the underwater drones that have hydrophones. They are going out and they detect. They're very efficient in their detection. There are also tests with the bottom-mounted hydrophones, real-time hydrophones.
In short, if you combine real-time acoustics with aerial surveillance, you have much greater confidence in presence and absence, so you support efficient navigation and you protect the whales.