In low-profile mask, it has a notched faceplate and a nose pocket to allow your nose to protrude past the plane of the lens. When you are going to buy a scuba mask, you should choose a mask with tempered glass lens plate. This is because tempered glass is less likely to shatter into fine, hazardous slivers. You can also have a tank filled with NITROX that will enable a diver to have longer bottom time but shallower dives. 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. The fins are strapped into your feet because of your powerful leg muscles that you can use for swimming and it provides far more effective propulsion than your arms can provide. Since scuba diving requires your hand to be freed from other activities, such as hand signals, checking gauges, and others, the fins allow your hands to be freed. The only difference though is that when you are exploring the world underwater, your gear is rendered weightless. Scuba diving underwater trips is exciting and you can select from different possible trips underwater - Decide what you wanted to explore or view underwater. It may include coral formations, shipwrecks, rare fish, spectacular color or large animals then choose your destination. If yes, then do not go for scuba diving, try something else that does not require you to risk your health. Lastly, you should know how to swim. If deep waters really make you panic, then do not pursue scuba diving. Scuba diving is meant for deep waters and not for shallow waters. If you think you cannot swim swiftly, choose other hobby instead of scuba diving. Remember that part of scuba diving is the equipment that you have to use for the sports. There are not only two but several gears that you need to make yourself ready before you can take a secure splash underworld. Scuba diving is a form of recreation that most of the people enjoy. Trips and vacations are also some of the desirable activities that divers wish to participate.