Overseas, to teach diving, you’ll need to obtain an internationally recognized qualification, such as PADI (Professional Association of Diving Instructors). The PADI qualification is well recognised in most of the world. It’s indispensable to teach diving in a PADI dive centre.
With PADI the certifications of Dive master, Open Water Scuba Instructor (OWSI), Master Scuba Diver Trainer (MSDT) and Instructor PADI will permit you to teach diving overseas.