Three Most Important Rules of Scuba Diving

[WileEDiver]

When I got certified in Hawaii a couple of years ago, on the first day, my instructor taught us the "Three Most Important Rules of Scuba Diving":

1. Never hold your breath
2. Equalize early and often
3. Remember to tip your diving instructor
   [/list=1]
   I guess the only reason the third rule was last is that if you didn't follow the first two, you might not be around to carry out the third.