Troglobites

A Troglobite is an animal that lives entirely in the dark parts of caves. Such creatures have become specifically adapted for life in total darkness and over time they have evolved to develop improved senses of taste and vibration detection, while loosing anatomical features that are superfluous without light, such as functioning eyes and pigmentation. Troglobites are often endemic to a certain site, having adapted to its particular environment and food sources. True Troglobites are eyeless.