You may also choose to acquire specialty instructor ratings in areas of interest. (balidivetraining.com)
You'll also have the opportunity to continue your professional education by participating in specialty instructor courses, which train you to teach specialties after instructor certification. (davyjoneslocker.asia)
All PADI Instructors will benefit from taking specialty instructor training courses, especially those who are ready to step up to the Master Scuba Diver ™ Trainer (MSDT) rating, which requires at least five PADI Specialty Instructor certifications. (padi.com)