I am going to answer part of the question and then turn the mic over to my colleague, Mr. Noël.
Yes, of course, as a biologist, I can confirm that since 2017 alone, we have learned a lot about whale behaviour. We now know that when they are in a feeding phase, they tend to congregate in a region where food is plentiful. Given that, we should maybe prioritize those areas, when it comes to closures.
I think it was Mr. Haché who said earlier that when the whales were really in transit and looking for food, we should maybe be cautious in considering the idea of closing fishing areas for the entire season.
I don't know whether Mr. Noël wants to add something.