There are bans on this practice in operation around the world, but Fordham said the coverage is patchy and, in any case, enforcing the bans is difficult due to a lack of policing on the high seas.

世界各地都在禁止这种做法，但福特汉姆指出，禁令保护的范围不完整，而且无论如何，由于公海缺乏管辖，很难执行这项禁令。