We decided to visit the Gran Cenote outside of Tulum and were expecting to swim with turtles and fish. While there were a few pet turtles and goldfish, the only real wildlife were bats that hang up in the cave openings.
The Gran Cenote is more geared to scuba but after 10 days of showering in salt water the fresh water felt amazing and refreshing.
The little store at the entrance also had some delicious homemade tortas if you dare!
Just outside of Tulum, there are a bunch of cenotes that are a must-visit when your in the area. The water is super soft and is enjoyable to soak in when you want a break from the sun. We ended up going to the Gran Cenote but were told about several others that were farther away and had cool features like swimming under a divide to get to another pool.