I just finished a week of cave diving with Aquanauts out of Puerto Adventuras near Playa Del Carmen. Martin was my guide and he was fantastic. He picked me up at my hotel every morning and dropped me off after. On a previous trip he picked my friend up from the ferry terminal, so I know they get clientele from Coz. I would recommend at least a 5mm full. The water temp is around 79 degrees, but since the dives are shallow, your bottom times are long. I'm about average for air consumption (although I was fighting a cold) and our runtimes were a minimum of 100 minutes per dive. They provided a hearty sandwich for the surface interval, and then back in the water again. Beautiful caves! Just outstanding formations! Martin, and the owner Dennis ( a nice Canadian lad) were great to me. They're an authorized Dive Rite dealer, so all of their equipment was top notch and fairly new (allowing me to try out the newest LED). And they service their equipment. That was one of my pet peeves from diving in the Bahamas. Top notch operation there, but all their tanks leaked because they wouldn't replace the nickel o-rings. Don't have to worry about that here. And that's perfect. If I'm going to be 1500 yards into a cave, I want to know that the equipment is going to function properly. As far as cost, I paid about $175 a day, and that included pick up and transportation to the cenote, tanks, entrance fees, lunch and two dives. Add a tip, and I still thought it was a good deal, especially for 3 hours of bottom time in the most beautiful caves I've ever seen.
