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The Blind Cavefish
Did you know that blind cavefish live in total darkness?

The Mexican Underground (Webisode 26) Back to Webisodes »

Summary

Deep underneath Mexico’s Yucatan peninsula, underground rivers wind their way to the sea. In some places, the forest floor has fallen in, leaving holes in the ground to access these mysterious underwater caves. The holes, called cenotes, were considered openings to the underworld by the ancient Mayans. Jonathan teams up with an expert cave diver to explore these spooky underground rivers.