Unlike wetsuits, drysuits are filled with air. During your drysuit course, your instructor will teach you how to control the air in your drysuit along with your buoyancy. You'll also learn about different types of drysuits, basic drysuit repairs and maintenance. Join the PADI Master Scuba Diver Challenge™ Want to reach the pinnacle of scuba diving? Hone your dive skills, build your confidence, and become part of the world’s elite 2% of divers with the PADI Master Scuba Diver™ rating.