Scuba diving is a mode of underwater diving in which the scuba diver uses a self-contained underwater breathing apparatus called scubas. The apparatus is completely independent of surface supply of oxygen needed to breathe underwater. It is different from other modes of diving in which divers solely rely on breath hold or on breathing supplied under pressure from the surface. In scuba a person carries their own source of air supply. To learn about scuba diving Seagrove is worth checking out.

There are two basic types of scubas which were introduced in mid-20th century. These types are the open circuit and the closed circuit. Exhaled air of divers in an open circuit is directly vented into the water. In cases of a closed circuit, exhaled air is recycled. This is done by adding oxygen then circulated the air back to the diver.

Scubas are personally and professionally applied in different fields. It is mostly done as a recreational or leisure activity. It is mostly done for enjoyment. Complicated underwater tasks are usually performed by hired professional divers. The application of this form of diving in the military is also common. Millitaries use it for infiltration, placement of mines and direct combat.

There is a field of study that involves underwater environment, including underwater videography and photography. They are the ones that carry out researches and documentary of underwater world. It sometimes includes marine biology, hydrology scientific diving and underwater archeology. It is also known to be a full time profession. Those professional divers give lessons to students.

The equipment to be used is governed by legal rules. Scubas are the most suitable in cases where mobility is needed underwater. Surface-supplied systems are more preferable in cases where the risks involved are very high. Individual training levels can determine how deep one can dive during this activity. Different countries also have different rules governing the activity.

Scubas are the equipment that is used during diving. It is a self-contained underwater tool that enables the diver to breath while underwater. The diver transports it on their backs. The pressure of the inhaled breath should be equal to that of the surrounding thus allowing inflation of the lungs. They also require having a mask. The mask helps in covering the nose and eyes. Also the mouthpiece is covered so that it can supply the gas needed for breathing from demand valve. The masks usually come in full. It is very rare allowing the diver to breathe through the nose.

The diver also requires diving gas. Which is usually in a mixture of oxygen, nitrogen and trace gases. To dive safely divers need to maintain control over their rate of ascent and descent in the water. This also helps them to be able to maintain a constant depth in the mid water.

During scuba diving, there are risks that one can be involved in. Poor gas management, misuse of equipment, entrapment, rough water conditions, pre-existing health problems of a diver and buoyance control are the main risks one can encounter. Before going for this activity, one has to employ a professional trainer who will train and teach them on how to do it safely.