There’s an underwater river flowing under the ocean in Mexico, and you’ve got to see it to believe it.

Located just 15 minutes away from Tulum on the Yucatan Peninsula, this submerged natural wonder will blow your mind.

Approximately 180 feet below the ocean surface, this freshwater river is separated from the saltwater above by a layer of hydrogen sulfate. Because of the limited visibility during the descent through this hydrogen sulfate “cloud,” only advanced SCUBA divers are allowed to make this dive.

The cloudy layer is termed a “halocline,” an area where freshwater and saltwater meet. The haze is a due to the sharp contrast in salinity.

Once through the fog, fallen trees and leaves can be seen on either side of the river.


This is just one of many cenotes (natural sinkholes) that formed as a result of groundwater being exposed by collapsing limestone bedrock nearly 6,500 years ago. Cenotes are especially common in the Yucatan Peninsula of Mexico, and because of their mystic and unique qualities were once used by the Maya for sacrificial offerings.

This particular location is called Cenote Angelita, meaning “little angel” in Spanish.

Who’s up for diving here?

Top Image: Anatoly Beloshchin www.tecdive.ru