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

布设渔网的些新方法已经减少副海豚的，但没有减少其它些生的，象长嘴、海龟。

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、剑旗等类为目标的延绳钓捞中，船只拖曳的绳带有多达2500个饵钩。