The PADI Enriched Air Diver course, commonly known as the Nitrox course, is one of the most popular scuba certifications for divers looking to extend bottom time and improve dive efficiency. This course is ideal for certified divers who want longer dives, shorter surface intervals, and increased safety margins while scuba diving.

Enriched air nitrox is a breathing gas with a higher oxygen content than regular air. While standard air contains approximately 21% oxygen, nitrox mixtures typically range between 32% and 36% oxygen, reducing nitrogen absorption and allowing divers to stay underwater longer during repetitive and deep dives.