SDI VS TDI Nitrox Course
We are often asked why we have two nitrox programs, one SDI and one TDI, and why would someone choose to take one course over the other – or even consider both? The answer is simple: SDI (Scuba Diving International) focuses on the entry-level sport diver while TDI (Technical Diving International) focuses on the more […]
Frediving and what PFI teaches
Freediving, also known as breath-hold diving, is the practice of diving underwater without the use of breathing apparatus such as scuba gear. Freedivers rely solely on their own physical ability to hold their breath and control their breathing to stay underwater. The physiology and psychology of freediving are closely related, as they both involve the […]
