In Cave Biologists Shine Light on the Creatures of the Dark by Charles Choi of ouramazingplanet.com, Choi talks about the wonders that scientists have discovered in deep, dark caves. These wonders are the organisms that inhabit these caves. They are characterized by sly movements, colorless skin, multiple legs, and some without eyes. These organisms were examined in Limestone caves in Arkansas, Missouri, Texas, Louisiana and lava beds in Nevada. The only source of energy for these organisms are debris that is washed in and debris brought in by other animals, which is usually feces. At the bottom of the cave animals similar to salamanders swim through streams and feed on smaller animals called amphipods. If these creatures were to leave the cave, they would most likely not survive. Because of the cool and wet conditions, these organisms would burn up or dry out(very similar) from the heat outside the cave.

http://www.ouramazingplanet.com/adaptation-of-creatures-that-dwell-in-caves-0806/