纪录片《非洲》 第48期:好望角（6）（在线收听）

Now, many miles from their natural home,

现在 家乡已在数英里之外

and in response to an unknown cue,

或许是收到某种未知的信号

they stop and begin to circle.

他们停下来开始围成一圈

Other marine fish that migrate upriver

其他海洋鱼类逆流而上

usually do so in order to breed,

通常是为了繁殖后代

but there's no evidence that these kingfish spawn up here.

但没有迹象表明无鳔石首鱼在淡水河中产卵

Neither do they hunt.

他们也不是来捕食的

So what are they doing?

他们究竟在干什么

In truth, the purpose of this strange behaviour is still unknown.

事实上这种怪异行为的目的至今不为人知

Within a few weeks,

几个星期之后

they will retrace their journey back to the ocean.

他们会沿着来路返回大海

The lives of kingfish,

无鳔石首鱼的生活

like those of turtles and butterflies and pelicans,

与海龟 蝴蝶和鹈鹕一样

are influenced by the Agulhas Current.

都受到厄加勒斯洋流的影响