and they can soar for weeks on end with minimal effort. 它们只需要很小的付出就能在海上飞行好几个星期
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
may grow at speed but their existence can also be short, 生长速度虽然很快,不过存在的时间也可能很短
Crabs can detect the faintest of tastes in the water and that helps them locate the latest body to drift down from above. 蟹类可以从水里嗅到从上面落下的尸体的极细微的气味 并以此追踪到食物
Why waste energy chasing around, if you can attract prey towards you with a lure? 既然有引诱猎物过来的诱饵 何必浪费能量到处追赶猎物呢
The monkfish can wait, for days if necessary, 安康鱼可以等好几天
No vestige of sunlight can penetrate as far as this. 没有阳光可以照射到这么深
and nothing can afford to waste any energy. 一点能量都不能浪费
Now the shearwaters can dive down on them, descending to twenty meters or more 猛鹱出动了 它们可以潜至20米甚至更深来捉鱼