The beginner scuba diving enthusiast will undoubtedly go through a stage where simple mistakes and oversights are the norm. Experience in a teacher is a great help, so find someone experienced to be paired with. Knowing little things that only experience can teach you are valuable in underwater safety. For example, you have to get in the habit of making checks at the right times. Whatever you need for a dive, make sure that it is in the boat, before you get in. The dive shop is another place that you need to check everything while you are still there. Unless you already own your own equipment, be certain you have rented the correct size.
Most experienced divers understand that by controlling how much air they breathe during a dive, they can stay under much longer. Yes, that may sound counter-intuitive, but more experienced divers breathe naturally and make their air last longer. Inexperienced divers, on the other hand, have a great deal of difficulty breathing naturally, which is what uses up their air.
The best way to fix this problem is to dive more and get additional experience. Breathing properly while you are diving can be dramatically improved by diving on a consistent basis. Even though this technique sounds very mundane, it is the most efficient way to improve the way that you inhale and exhale underwater.
It is important to always keep your ears open, especially when you are around experienced divers, for suggestions that they might have to improve your diving. To make sure that you always have the safest possible experience, keep your diving gear up to par at all times. Many novice divers will actually have the impression that they will not have enough weight to go deep on a dive. If you get this wrong, it is possible that you may exert too much effort while diving which could lead you to breathing too much. The end result is that the air in your tank will be depleted sooner than usual. So, make sure your BC (buoyancy compensator) is totally empty of air because it is possible to have trapped air bubbles.
We strongly recommend you begin equalizing even before you start your descent. The way that you do this is by accomplishing the Valsalva maneuver which is used by most divers to clean up their ears. You do not have to be a diver to have at least one time or another in your life done this particular process. All you do is pinch your nose shut and blow through your nose, but do it gently. It is best to do the Valsalva maneuver prior to going into the water for your dive.
What this does is helps equalize the pressure in your ears, something that should not be done while on the dive itself. As you descend, you will see how much easier it is to maintain equalization in your ears.
Getting your PADI certification for scuba diving will be just the beginning of hopefully many years of safe and fun exploration under the sea and ocean. As you continue to dive, always be aware of safety issues that may show up. So always prepare and follow the rules to avoid the possibility of problems while under water.