December 27. Yesterday SCUBA diving. The suddenly opened third dimension, and not only that, but the ability to move freely in all three dimensions, I find even more spectacular than the fish, sea urchins and corals. I used SCUBA equipment once, that was forty years ago, and we passed the mouthpiece around in circles on the floor in the swimming pool. Here again learning to breathe with confidence underwater. Then while we swam out to the reef, I lost almost all situational awareness and only did roughly what the others were doing. Controlling buoyancy with the compressed air vest rather difficult. Visibility wasn’t great and at one point I suddenly couldn’t see any of the others, which I figured probably made our instructors pretty nervous. I surfaced and saw the buoy with the dive flag and swam back there.