Australia is dealing with one of these right now, the second-largest trawler in the world, the Dutch FV Margiris.
At 143-metres long, the Margiris is the largest trawler, by far, to ever enter Australian waters. It was originally issued permits to take 18,000 tonnes of mackerel and red bait fish but concerns quickly built over the ship's massive by-catch of creatures ranging from sea turtles to dolphins.
Finally a flotilla of 200-small boats turned out to blockade the Margiris in port forcing the government's hand. Now it has imposed a 2-year moratorium on the vessel while it studies its environmental impact.
