[video=youtube]http://https://youtu.be/NlIWONELXK0[/video]
Not sure if that last one worked but this should. Video of so cavern diving I did with friends around Playa Del Carmen.
Nice! I did some cenote diving around Playa about 14 years ago. I was still a novice diver at that point. I'd love to go back down there with a camera.
I hope you do I would like to see the pics you come back with.