- The nautilus keeps well clear of them.
鹦鹉螺必须远离它们 - It's small tentacles carry highly developed chemical sensors which can detect traces of both predators and prey.
它的小触手有非常灵敏的化学感觉器, 可以探测到敌人和猎物的踪迹 - It uses it's water jet to dig in the sand.
鹦鹉螺利用喷水器挖沙子 - Because it devotes so little energy to swimming, it only needs a meal once a month.
因为它游泳耗费的能量极少, 所以只需每个月吃1顿饭 - Got something.
得到什么东西了 - And just as well. Dawn is approaching and it has to puff it's way back, to deeper waters.
如愿以偿. 黎明快到了所以它必须回到深海里去 - Thirty miles away, shoals of squid are jetting upwards towards the surface.
30英里外的海上, 大量的鱿鱼游到海面上
Because it devotes so little energy to swimming, it only needs a meal once a month. 因为它游泳耗费的能量极少, 所以只需每个月吃1顿饭
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