Want to stay down for longer? No wonder then why the PADI Enriched Air Diver course is the most popular specialty scuba diving course. Scuba diving with enriched air nitrox gives you more no decompression dive time. This means more time underwater, especially on repetitive scuba dives. What You Learn: Techniques for getting more dive time by using enriched air nitrox Enriched air scuba diving equipment considerations Enriched air considerations, including managing oxygen expo