The above referred site link offers some realities to the enthusiastic tourists, who like adventures . The link shares some of the spectacular images of the popular Cenote Angelita in Mexico’s Yucatan Peninsula. Known as Baby, the location is 0 to 15 minute drive south of Tulum, and is an advanced scuba diving cenote that houses a surreal surprise. Scuba divers can able to witness an undersea river streams through the ocean, which is taking place due to a thin layer of hydrogen sulfate, which separates the freshwater at the top from the saltwater below . Scuba divers can actually swim right through the incorrect floor or mystical cloud that looks like a streaming river.
So have a look at ocean floor picture today.
If you are exploring for rivers in mexico, you have land on the right website.