My fear going down farther than about ten feet is how long it takes to reach the surface. 30 feet is a long way underwater.
Rescue is related. I doubt anyone could pull somebody out that's passed out at that depth. You're just not going to have enough air. I had to help someone out of a pool once and the only way I was able to manage was by walking along the bottom with them on my shoulders to shallower area. They panicked and tried to climb me, pulling me under if I did anything else
Getting certified (at least for the association I use) requires that you are able to demonstrate rescuing an unconscious diver at the appropriate depth (after identifying their blackout).
Well done helping that person. Rescuing a free diving blackout has the benefit (for the rescuer) of an unconscious victim.
Rescue is related. I doubt anyone could pull somebody out that's passed out at that depth. You're just not going to have enough air. I had to help someone out of a pool once and the only way I was able to manage was by walking along the bottom with them on my shoulders to shallower area. They panicked and tried to climb me, pulling me under if I did anything else