Did You Know?
The Mysterious Hammerhead
Did you know the head of this shark helps it swim better?
Sign-up for email updates on happenings with Jonathan Bird's Blue World!Sign-up
Take our quick 14 question survey to help us improve Jonathan Bird's Blue World!Take the Survey
The Mexican Underground (Webisode 26) Back to Webisodes »
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.
If you liked The Mexican Underground you might also like...
The Crystal Cave
The Blind Cavefish