My wife and I love to go scuba diving. We usually use a rebreather too so we can extend the time underwater
My wife and I do as well, we really enjoy diving in Hawaii.  Where have you gone diving before?
Cave diving
Cave diving is underwater diving in water-filled caves. It may be done as an extreme sport, a way of exploring flooded caves for scientific investigation, or for the search for and recovery of divers lost while diving for one of these reasons. The equipment used varies depending on the circumstances, and ranges from breath hold to surface supplied, but almost all cave diving is done using scuba equipment, often in specialised configurations with redundancies such as sidemount or backmounted twinset. Recreational cave diving is generally considered to
stating that: “A new sport—skin diving—is becoming popular in the area. Recently while diving in Palos Verdes, I ran into several divers in the water with me who didn’t know what they were doing. One had one of the new underwater breathing units that allows divers to stay under for long periods of time... I propose that my department get involved in this sport and provide training classes. I believe that diving will grow in the future and we have an obligation to make the sport as safe