At this point in my career (about 700 dives) the thing that scares me most is current. The water is so much bigger and stronger than I am, and past a certain point, there is really nothing useful I can do about it. Puget Sound has enormous currents, and I plan obsessively to avoid times when I'm likely to be caught in them. My experience with walls has given me a very sober respect for, and worry about, up and down drafts, although I'd rather be caught in a downdraft than a strong updraft, having done both.
I don't mind surge; I've learned how it works, and the worst things it can do is push you into rocks, and ruin the viz. But current . . . Current can separate you from the boat, or from your buddy, or push you down, or shoot you up like a ballistic missile. Current is scary stuff. That's why they make X-scooters and tide charts.
I don't mind surge; I've learned how it works, and the worst things it can do is push you into rocks, and ruin the viz. But current . . . Current can separate you from the boat, or from your buddy, or push you down, or shoot you up like a ballistic missile. Current is scary stuff. That's why they make X-scooters and tide charts.