The PADI Enriched Air Nitrox Diver Course is rated as one of the most popular specialties. Diving with nitrox mixes (enriched air nitrox) gives you more no-decompression dive time - all other factors being equal.
Breathing a gas mixture with an increased amount of oxygen in the tank (and less nitrogen) typically allows you to stay down longer underwater and especially on repetitive dives.
Number of Days 
Number of Dives  (optional*)
Minimum age 
Prerequisite: PADI Open Water Diver (or qualifying certification)
✔ Personalised tuition from a private scuba instructor
✔ Free rental of nitrox equipment on optional dives*
✔ Pattaya hotel transfers, food, and soft drinks on board the boat*
✔ PADI Enriched Air Certification Card and Nitrox Specialty Manual
More Specialties |> Deep |> Wreck |> Navigation |> Night |> Photography |> Buoyancy |> Drift |> Scooter |> Boats |> Drysuit
Some nitrox divers believe that they feel less tired after the dive when they have used a scuba tank filled with enriched air. Nonetheless, the primary benefit is giving substantially 'longer' bottom times for dives made within the limits of recreational scuba.
An example: The no-decompression limit for a dive made to a depth of 22 meters is 37 minutes. Using a nitrox tank filled with one of the most popular nitrox mixes of EANx36% extends the bottom time to 70 minutes.
Extended periods under water is potentially beneficial for deep wreck diving or for underwater photography. The PADI Enriched Air Diver Specialty Certification can also be credited towards the elitist rating of Master Scuba Diver.