When you say “la surveillance”, I'm thinking of monitoring as a scientific method, but I think that the question of enforcement also comes with that.
The obvious starting point is VMS. We have remote sensing technologies, using vessel monitoring systems, to tell what fishing boats are doing, where they are and whether they are following the rules. That's an obvious starting point. We have a fisheries observer program, which is well developed in our country, and we should be using it to ensure that the fishing industry is following the rules, as it generally tends to do.