Texas A&M University in Galveston is a great place to major in Marine Biology. It is the only branch campus of Texas A&M where graduates recieve everything that main campus has (i.e. your diploma says just "Texas A&M", NOT Galveston)
There's also the National Resource Center for Cephalopods located in Galveston. They hire a lot of college interns to do such things as collect live food, and feed squid, cuttlefish, octopus and nautilus, and maintain the systems that support them.
There is often some research project going on there.
I've posted a few pictures I've taken while I worked there if you go looking through old posts.