I did not know until today the the Maine Inland Fisheries and Wildlife Department did anything like tours but here you go. Apparently they run the Swan Island Management  also and are offering up a tour and lobster bake this weekend in Saturday the 17th.

Swan Island is just over 2 hours away from Bangor. During your time there they will be giving you some time on the water viewing Little Swan Island, then everyone will stop at the campground for a traditional lobster bake! Clams, lobster, corn, potato, coleslaw, and dessert. This runs on Saturday from 3:30pm - 6:30pm and your $40  fee is required in advance. Space is limited to 50 people. Call 207-287-5322 to make your reservation!

This is just one of several Swan Island events this month.