How do you prepare to be a Marine Biologist?
You will want to take as many advanced classes in high school as possible. When you have a chance to take electives, take science classes (biology as many as possible). You will then want to select a college that offers Marine Biology as a major or concentration and apply. Once you are accepted into that college get a degree plan for being a Marine biologist and take those classes. You will have a college advisor or counselor that will help you prepare for this career.