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Tuition and Aid. The cost of an education for marine biology tends to range between $28,000 and $33,000 per year in tuition and fees through undergraduate, graduate, and doctoral studies. You can also expect to pay between $500 and $1,000 yearly in books and supplies.
Rating Newest Oldest. Best Answer: You can become a marine biologist or an oceanographer with just 4 years of college. What I would suggest if you are really interested in this field is to volunteer every chance you get.eport Abuse. Four years of undergrad. After that you can be a marine biologist... but you need three or four years of grad school to get your doctorate.