Scuba diving.

recreational diving is usually done with 3000 psi of air in a certified SCUBA tank

Scuba Diving International (SDI) is a SCUBA training and certification agency. It is the recreational arm of Technical Diving International, the world's largest technical diver training organization.SDI is the only diver training agency that requires students to have access to a modern dive computer on all dives during training from the very start. SDI is also unique amongst recreational diver training organisations in that it recognises solo diving as part of recreational diving, and offers a special training course relating to it.Every other major recreational diver training organisation mandates diving with a "buddy" at all times. SDI is a member of The World Recreational Scuba Training Council.

Very much. I love to participate in the wonderful world of recreational scuba diving.

Professional Diving is a type of diving where the divers are paid for their work. Recreational diving or sport diving is a type of diving that uses SCUBA equipment for the purpose of leisure and enjoyment.

Military, navy, rescue and police diving courses need to be taken per your division or location.

Technical and scientific diving is mainly for research and exploration.