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10 creatures that thrive in caves

By: Bryan Nelson on Jan. 10, 2011, 1:08 p.m.
A Cave Harvestmen

Photo: Marshall Hedin/Flickr

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Cave harvestmen

Harvestmen look like spiders, but they are arachnids belonging to an order of their own.

While many species live on the surface — like the bugs often called "daddy long-legs" — these animals are well-adapted to cave life and are some of the most commonly found types of troglobite.