Colorado Scuba Diving Academy practically turns people into fish in its scuba-certification courses. Founded by PADI-certified diving instructors, the schools train students in a variety of diving disciplines including open water, rescue, and wreck diving. For those who just want to get their feet wet, Discover Scuba teaches the basic of using the equipment and breathing below the surface, while more advanced nitrox, altitude, and drysuit certifications prepare divers for any situation they might encounter while swimming in the deep.