Scuba diving is an underwater diving activity in which participants experience the underwater environment while breathing air through a self-contained underwater breathing device. (SCUBA).
Scuba diving is both a recreational and scientific endeavour.It is possible to do so in bodies of water such as oceans, lakes, rivers, and others. Scuba diving needs training and certification to ensure the diver's safety.

Certification programmes frequently include classes, pool exercises, and open-water dives with an instructor.Divers must learn important skills such as how to remove water from their mask, control their buoyancy, and properly operate their diving equipment. Scuba diving equipment includes a diving mask and a wetsuit or drysuit to keep the diver warm in frigid water.