Scuba diving is a mode of underwater diving where the diver uses a self containet self briething apparatus (scuba) thats the world ,which is completely independent of surface supply, to breathe underwater .Scuba diving divers carry their own source of breathing gas in the bottle, usually compressed air ,allowing them greater independence and freedom of movement than surface supplied divers and longer underwater endurance than breath-hold divers, Scuba divers.
Although the use of compressed air is common, a mixture of air and oxygen called enriched air or nitrox has become popular due to its benefit of reduced nitrogen intake during long or repetitive dives. Breathing gas diluted with helium may be used to reduce nitrogen narcosis for Scuba Divers not only in Dubai.
Open circuit scuba systems discharge the breathing gas into the environment as it is exhaled, and consist of one or more diving cylinders containing breathing gas at high pressure which is supplied to the scuba diver through a diving regulator. They may include additional cylinders for range extension, decompression gas or emergency breathing gas. Closed-circuit or semi-closed circuit rebreather scuba diving systems allow recycling of exhaled gases. The volume of gas used is reduced compared to that of open circuit, so a smaller cylinder or cylinders may be used for an equivalent dive duration. Rebreathers extend the time spent underwater compared to open circuit for the same gas consumption; they produce fewer bubbles and less noise than open circuit scuba diving which makes them attractive to covert military divers to avoid detection, scientific divers to avoid disturbing marine animals, and media divers to avoid bubble interference.
Scuba diving may be done recreationally or professionally in a number of applications or working as a scuba diver for underwater indusrty or projects, including scientific, military and public safety roles, but most commercial diving uses surface-supplied diving equipment when this is practicable. Scuba divers engaged in armed forces covert operations may be referred to as frogmen, combat divers or attack swimmers.
A scuba diver primarily moves underwater by using fins attached to the feet, but external propulsion can be provided by a diver propulsion vehicle, or a sled pulled from the surface. Other equipment needed for scuba diving includes a mask to improve underwater vision, exposure protection (ie: a wet suit or dry suit), equipment to control buoyancy, and equipment related to the specific circumstances and purpose of the dive. Some scuba divers use a snorkel when swimming on the surface. Scuba divers are trained in the procedures and skills appropriate to their level of certification by diving instructors affiliated to the diver certification organisations which issue these certifications.These include standard operating procedure s for using the equipment and dealing with the general hazards of the underwater environment, and emergency procedures for self-help and assistance of a similarly equipped diver experiencing problems. A minimum level of fitness and health is required by most training organisations, but a higher level of fitness may be appropriate for some applications.
Scuba Diving Dubai getting every year more popular with local people and tourists spending their holidays in Dubai CIty.