Pacific Diving Academy (PDA) adheres to strict instructional standards as established by the Professional Association of Diving Instructors (PADI). Each individual candidate prior to enrolling in any PDA course must meet all prerequisites. Prerequisites can be found in the class description as published by PADI. In conjunction with successful completion of all required exams and instructional courses, certain Professional Levels have additional requirements for certifications. Please see Note, as it applies, for each Professional Level.