As a Nitrox diver, you can increase your bottom dive times and safety margin, as well as shorten your surface dives—so you can spend more time diving and less time waiting! In this program, you'll learn new skills and expand your diving knowledge while learning how to safely plan and dive using enriched air mixtures containing up to 40% oxygen. Upon completion, you'll earn your SSI Enriched Air Nitrox (EAN) 32% or 40% certification.