I DOUBT whether Sir Ray Lankester would maintain his theory of the origin of blindness in cave-animals, at least in the fishes living in the North American limestone caves, if he had carefully ...

Explore the fascinating world of blind animals thriving in darkness ... Their existence does not depend on vision; they live in the dark caves and in the depths of the ocean.

Other blind animals rely on their other sense or even ... That’s the case with a cave-dwelling species of huntsman spider ...

But, between one hundred and fifty and two hundred thousand years ago, some came to inhabit a more exotic environment: the underground pools of a system of caves. Over generations of darkness ...