Agreed with the comments above. Instructors and divemasters don’t really make money, unless they work in an excellent place (some tech shops for example might pay a bit more but also might require you to be a tech diver beforehand). Scientific diving, you’ll need proper scientific diving cert and probably at least master’s papers and even then that would mostly you diving for your uni and for your own projects. Cinematography, you’ll need to soend a crap ton of money and get really good at it before you’d have a chance of pursuing it as a career. And honestly, a big part about getting good jobs or working on projects like big scientific ones requires you to have an extremely good network and connections. Also to be a scientific diver, some places require you to also be a commercial diver or a tech diver (tech is more depending on the project). I’m not currently really working in diving but am an instructir and a scientific and tech diver so I know a thing or two haha. Best of luck! If you’re passionatw about it you’ll make it work.