A shoal of fish will do this. So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
A shoal of fish will do this. So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
一大群鱼也是这样，所以，根据海底位置来判断大群鱼的位置也就相对简单了。