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10 creatures that thrive in caves

By: Bryan Nelson on Jan. 10, 2011, 1:08 p.m.
An Olm

Photo: Wiki Commons/GNU

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The olm

This eyeless, white, dragon-like amphibian is called an olm.

In fact, describing it as a dragon isn't that far from the truth. When they were first discovered in the 18th century, many people believed the creatures were baby dragons, a belief reinforced by the reality that they were only found in dark, aquatic caves.

The olm is likely the first troglobite discovered, and to date it is also the largest. Some olms have been known to measure as much as a foot in length.