This undated image released by Animal Planet shows an image from the 

This undated image released by Animal Planet shows an image from the new series, "Underworld," where divers explore underwater caves around the world. Animal Planet is unveiling 11 new shows for the season ahead. (AP Photo/Animal Planet, Karen Doody)
Associated Press
This undated image released by Animal Planet shows an image from the new series, "Underworld," where divers explore underwater caves around the world. Animal Planet is unveiling 11 new shows for the season ahead. (AP Photo/Animal Planet, Karen Doody)
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