In terms of a provider (entity in which provides a service or goods) in the scuba industry, my list would be something like this:
Guides
Divemasters
Asst. Instructors
Instructors
LDS
Boats
Manufacturers
Travel Agencies
Hotels
Airlines
Training Agencies
Associations
Insurance
Medical
I would be interested in seeing what others might think would belong to this list.
Guides
Divemasters
Asst. Instructors
Instructors
LDS
Boats
Manufacturers
Travel Agencies
Hotels
Airlines
Training Agencies
Associations
Insurance
Medical
I would be interested in seeing what others might think would belong to this list.