Are cenotes infested with snakes?

No. While cenotes are natural environments, snakes are rarely an issue for swimmers. The water is often too cool and busy with human activity for them to linger.

Can I bring my own snorkeling gear?

Yes, and you should. Most places rent it, but having your own mask ensures a better fit and keeps you from using gear that hundreds of other people have used.

How to swim in cenotes safely in Yucatan

To swim safely in cenotes, always wear a life jacket if provided, shower off all sunscreens or bug sprays before entering, and never touch the rock formations. Stick to marked paths and avoid diving unless the cenote is specifically designated as a jump-safe zone.

De-chemicalize. Cenotes are fragile underground ecosystems. Even if you use 'biodegradable' sunscreen, it still pollutes the water. Shower thoroughly before entering to remove all lotions, deodorants, and perfumes.
Check the depth. Never dive headfirst into a cenote. Many have hidden rock shelves or shallow areas. Always enter feet-first or use the provided wooden stairs.
Use a life jacket. Most commercial cenotes require them. Even if you are a strong swimmer, the water can be cold (around 75°F/24°C), which can lead to sudden muscle cramps. Wear the vest to conserve energy.
Watch for cave currents. Some open-air cenotes have currents that draw water toward cave entrances. If you are not a certified cave diver, stay in the main open swimming area and avoid swimming into dark tunnels.

Are cenotes infested with snakes?: No. While cenotes are natural environments, snakes are rarely an issue for swimmers. The water is often too cool and busy with human activity for them to linger.
Can I bring my own snorkeling gear?: Yes, and you should. Most places rent it, but having your own mask ensures a better fit and keeps you from using gear that hundreds of other people have used.