- but it travels shell first, so it can't see exactly where it's going.
由于它是倒着游 所以它自己也很难看清楚自己要去哪里 - It's nearest living relatives are squid and octopus which, over evolutionary time, have both lost their shells
它是已经进化到已经没有壳的章鱼和乌贼的近亲 - and the octopus has become one of the nautilus' major predators.
章鱼也已经成为了猎食鹦鹉螺的主要天敌 - It's a master of disguise.
它是伪装大师 - 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
It's a master of disguise. 它是伪装大师
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