Looking for bridal shower venue with ocean theme

My SIL's wedding is in August. I'm trying to gather ideas about where to hold the shower. She's getting married at the Cruiseport in Gloucester, and is all about everything and anything ocean. My first thought had been the aquarium in Boston, but that seems pricey, and it will be inconvenient for parking, carrying gifts, etc. (However, if any knows how much a room there costs, I'd love to know!)

Does anyone have any suggestions for possible venues around the Boston/North of Boston area? The guest list is at 60 people right now.

Any help is appreciated!