This means that equalizing the mask will be impossible and can cause painful mask squeeze as you go deeper. The scuba mask, which includes covering the nose, will enable you to equalize the pressure inside the mask by exhaling through your nose. Another reason why goggles aren t used for scuba diving is because you can never clear water or fogged lenses underwater. NITROX mixes alters the air mixture by increasing the oxygen content and decreasing the nitrogen content. This is done by measuring the scuba tank content with NITROX analyzer. This is typically safer for most divers because this lessens the risk of nitrogen being trapped inside the body and cause bends. If you are with someone who has a problem, it is your responsibility to look for someone who will help him or her. Stop being bashful. It is not wrong to dive with someone who can make you feel safer and secured. If you are shy that you are diving with someone, then probably scuba diving is not for you. Adjustable strap fins have foot pockets that are open at the back and are equipped with adjustable heel straps while the full foot fins have foot pockets encloses the heel. Most scuba divers prefer adjustable fins because then can be worn with wet suit boots and most high powered models of fins are available in adjustable strap fins. Proper training and motivation are the most important factors that you need to consider. This will ensure that you are safe the moment that you jump in the water. You can learn all of these in from scuba diving schools. People of all ages have the privilege to participate in scuba diving. As long as you have the right skills and abilities you will have a room in this recreation. What if you don t know how to clear a mask filled with water without surfacing? It may cause discomfort and sometimes panic if you don t know how to do this. Another situation is what if you don t know what the term safety stop means? From 60 or 70 feet, you will be breathing pressurized air and more nitrogen will enter your system.