The underwater caves of Mexico's Caribbean coast contain the beautiful formations found in typical, terrestrial caves. In the film, the water is so clear, you won't know you're underwater until you see Hazel in Scuba gear. These caves are beautiful, but dangerous. One wrong move by a caver here can be deadly. Some local recreation departments offer beginning caving trips and training.
Most caves are on private land, so ask the landowner, or managing agency for permission first.
Recommended group size is three people.