Armond Perretta wrote:
Having some trouble finding an answer to this query. I suspect there's a
passenger ferry of some sort (in season) between Oak Bluffs and Nantucket
Harbor. Can anyone confirm or deny?

Hy-line has two ferry routes, one that goes back and forth, the other
includes Hyannis. Unfortunately, the times are such that if you're on
one island, you can't "day-trip" to the other.

As it turns out, Cape Air flies between the islands, under $50 each way,
with several flights a day.