What classes should I be taking in highschool to be better prepared for marine biology in college?
However, I would like to point out that classes aren't the only thing you should be taking to get ready for college. You should see if there are any local research opportunities for high school students in marine biology. If not, you could definitely just reach out to some marine biologists on linked in or by email to ask any questions you have. Lots of professionals love getting asked these sorts of questions. They could even become your mentor!