Well, my problem I think is to do deep divings. I have never liked that nor have I ever managed diving till the bottom of a deep swimming pool. In class we had to once dive after a heavy doll in the bottom of the deepest part of the swimming pool, I managed diving halfway down but then I freaked out by the thought and dived right back up again. After this I haven't cared too much about making more deeper dives in the future. I think it is frightening, I mean; "What if I would suddenly be stuck down there and wouldn't know how to get up?"