SDI, which stands for Scuba Diving International, grew from TDI, or Technical Diving International, to blend the high safety standards of technical diving with recreational diving training. This agency emphasizes flexibility in equipment and techniques, allowing instructors to tailor training to individual needs. They encourage a real-world approach, teaching divers to use their actual gear instead of mandates on equipment types. Additionally, SDI values experience and innovation, making them a leader in diver training by adapting to modern diver needs and improving safety practices.