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And shadowing them...
而緊隨他們身后的是
..Africa's biggest predator.
非洲最大的食肉動物
A Bryde's whale.
布氏鯨
This female is 15 metres long
這條雌鯨有15米長
and weighs more than a whole family of elephants.
比一個大象家族還重
The dolphins are in pursuit of sardines - millions of them.
海豚們正在追逐上百萬條的 沙丁魚
But these cold-water fish
但這些冷水魚
are heading towards an impenetrable barrier of warm water
正在朝一道他們無法穿過的
that they will not cross, the Agulhas Current.
暖水流前進 即厄加勒斯暖洋流
They're trapped.
他們被困住了
And that gives the whale her chance.
這就讓鯨魚有了可趁之機
But the sardines are so speedy
但沙丁魚游得很快
that the whale only catches a few with each pass.
龐大的鯨魚每次出擊只能吃到幾條
