I think the problem with your list is you are solely looking at cost and not factoring in what the student wants to major in…
As long as the OP has a good safety, financially, admittance, and with a desired major, there is no reason to add a bunch of schools not well known for Marine Sciences.
No school should be applied to that the student doesn’t love more than their safety. Having more than one safety is fine if there isn’t a clear preference, but one doesn’t need oodles of them just to say they got admitted to oodles of schools.