The Advanced Open Water Diverhe Advanced Open Water Diver course is all about advancing your skills. You'll practice navigation and buoyancy, try deep diving and make three specialty dives of your choosing (it's like a specialty sampler platter). For every specialty dive you complete, you can earn credit toward PADI specialty certifications. Here are a few of the many options: Deep, Digital Underwater Photography, Dive Against Debris, Dry Suit, Enriched Air Nitrox, Fish