Pick occupations that interest you. Then research them in depth. You would want to know exactly what the position is about. What would you be doing? Where are jobs like that offered (any place, only at the ocean?).
How much does it pay? What are the paths for promotion. What courses would be helpful now and what are required in college.
Get all the info you can, but remember, you don't have to choose now. A lot of people enter college thinking they will be one thing and turn out to be something else by graduation. That's why the first two years of college don't require a declared major.