Hi, A few thoughts. 1) research in chemistry or biology would also be very helpful for grad school in marine biology, and there should be more opportunities for those. 2) https://coast.noaa.gov/fellowship/undgrad_opportunities.html You can pursue summer research internships, a quick search found this url. Suggest check NSF sites as well, and expand to include chemistry and biology, not just marine bio 3) Also national labs are great places for summer internships, https://orise.orau.gov/stem/internships-fellowships-research-opportunities/undergraduates.html again, expand to include chemistry and bio. Note for national labs (ORNL, ANL, PNNL, etc) , once apply for undergrad program also best to search the lab websites and find researchers with projects that interest you and email them directly. Apply early and contact researchers directly early. I would not do early finish, I would focus on good undergrad grades, prep for GRE’s, and get summer internships and/or during school year in related research areas. Good luck!