Colby is probably closer to Bowdoin than Bates in vibe. Check out the Bigelow lab for ocean sciences! And they have a Jan Plan the works with refugee resettlement in Portland.
Scripps doesn’t have marine science as a major, but there are profs who are focused on that. They have marine ecology, oceanography, and some good study abroad programs that could fit. Perhaps better at the grad level, but worth checking out. There also have a number of creative writing workshops.