The most popular PADI Specialty course
This course is a must for all divers now that Nitrox is widely available at many dive centers and resorts around the world. By replacing the nitrogen in air with a higher proportion of oxygen, Enriched Air allows divers to stay down for longer, with the same amount of Nitrogen absorption. One can also use Nitrox to mathematically reduce the risk of decompression sickness by widening the safety margin when used within recreational limits.