It's not exactly field guide-sized, but IS "an illustrated guide to fishes, invertebrates, and plants of bays and inlets from Cape Cod to Cape Hatteras." It also discusses the natural history of the organisms. Yay!
When you are growing up, there are two institutional places that affect you most powerfully -- the church, which belongs to God, and the public library, which belongs to you. The public library is a great equalizer.