Woft,<br><br><br>It may be that I am accident prone (ok, I am), but I had so many close calls diving that I finally it gave up. My advice:<br><br>Always, always, always carry a knife. Always. Obvious reasons.<br><br>Have a whistle that works when wet (Fox 40, JetScream, etc...). When you surface far from dive boat and don't feel like swimming to it (or can't), a whistle is far more likely to be heard than your voice. Likewise, some sort of visual signaling device is also a good idea.<br><br>A "Spare Air" is nice to have, but not really neccessary.<br><br>That's all I can think of for now.<br><br>Take care,<br><br>Andy