Quote: (Originally Posted by
onetime)

Been to the caves on OC. I'm just Intro to cave certified though. Most of the caves are relatively shallow with lots of up and down, doesn't seem well suited for Rebreather. What locations did you visit?
Not all the caves are like that. Some have a fairly constant depth. I just let my counterlungs get a little fuller than usual to save a bit of gas. Kept the OPV tight and used my nose to control loop volume when we got to the bumpy bits. One nice thing about CCR cave is you can spend lots of time really looking at stuff without the timre pressure OC diving demands.