With 30 years of experience on every kind of watercraft, Captain John Nicolai is uniquely suited to take his guests around the waters of Acadia in search of the most popular main course for mom and dad’s dinner plate: lobster. Kids will gain a whole new appreciation for these armored crustaceans as they help haul up traps and learn about the history of lobstering — and everything else — on Mount Desert Island and surrounding areas. Tours are usually capped by a circuit around exposed ledges where harbor seals are known to sun; because Lulu is small and unobtrusive, Captain John is able to get right up close for a seal’s eye view of the playful mammals. (Between three and four tours leave daily; the boat leaves from Harborside Hotel, 55 West Street.)