Unfortunately, my colleague from fisheries management wasn't able to be here today with me, but my understanding is that through the licensing policy....The main fishery that the bycatch comes from is a longline with a hook, like a swordfish fishery, and part of that licence for the swordfish fishery is that they are allowed to land and bring back certain species of shark.
On May 27th, 2019. See this statement in context.