Planet Earth

Season 1 Episode 4

Caves

1
Aired Sunday 8:00 PM Apr 22, 2007 on Discovery Channel
9.7
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Episode Summary

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This episode introduces you to one of the most mysterious habitats in the world, where not many have ever been: caves. Also the only habitat not directly driven by sunlight, this episode shows you the many different, incredible creatures inhabiting them, including the various species of bats. Also introducing you to the different types of caves, from underground caves, to underwater caves, this episode brings Planet Earth to a fascinating end.

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