SuomiBetta
Aquarium Advice Freak
In the long run, you'll be better off for it. Marine Science is too narrow a major for an undergrad, and I'm only doing it because I get reduced tuition for it through a NEBHE program. (and because I want to be a research scientist in aquaculture). As it is I'm backing it up with a more "serious" math major and statistics minor.
Molecular biology is awesome and you could easily get into a graduate school for marine bio/aquaculture if you wanted (one with awesome setups like we have here). Actually, a graduate student in the disease lab I work in was a molecular bio major.
If I get fed up with humans, I might just do that LOL! I love rare human genetic diseases, but eventually I want my two phDs in Animal and Human Genetics