New methods of setting nets have reduced the bycatch of dolphins but not of other species, such as billfish, turtles and sharks.

布设渔网些新方法已经减少副获物获，但没有减少其它些生物获，象长、龟和鲨。

In longline fishing, which targets fish such as tuna, swordfish and billfish, boats trail long lines bearing as many as 2500 baited hooks.

在以诸如金枪、剑和旗等类为目标延绳钓捞中，船只拖曳绳带有多达2500个饵钩。