Is it possible to make a living in the diving industry and make enough to support a family? If so what types of jobs would these be? I know dive instructors don't make enough.
No. In order to make enough to support a family, you'd have to live a life incompatible with having a family.
A week doesn't go by that some new diver doesn't ask this question here. You've decided diving is the greatest thing since sliced bread, and you want to make it your career. Bad idea. If you HAVE to do it to put a roof over your family's head, you WILL come to view it the same way people view accounting, sales, or runnng a forklift. This basic tenet of human nature has been well known at least since Mark Twain wrote about a boy who made his friends pay to paint his aunt's fence. Furthermore, nobody's going to pay you to do something you like so much you'd do it without pay. That's basic economics. Part of what makes diving fun is all the stuff that you get to avoid doing because the people with "diving careers" do it, like scrubbing bilges, hauling tanks maintaining compressors, etc., and part of what makes diving affordable is that they make far less than the diving consumer (because they are paid out of that consumer's discretionary spending.)
Figure out what you can do better than almost anyone. Develop that and make a career out of it, even if it doesn't blow up your dress. Make lots of money, and spend it on diving on YOUR terms, and on sparkly baubles to keep your wife from complaining about the time and money you spend diving.
I know, when you were 10, they told you that you could be anything you want. That was a lie - if it was true, everybody would be spies and supermodels, and there'd be no one to make the sandwiches. Guys like Ray Kroc and Dave Thomas figured this out, realized they could make sandwiches more profitably than anyone else, and both had enough money to buy a fleet of dive boats. Work is what you gotta do so you can do what you wanna do.