H2O: The Molecule That Made Us | Cenotes | PBS

Camilla Jaber, a free-dive champion, dives in a cenote, in the Yucatan, Mexico. A cenote is a small opening of underground water in the jungle. Here, where there is not a lake, river or stream for hundreds of miles, the water from a cenote could support whole cities. Stream full episodes at:https://www.pbs.org/molecule