Lobsters are available at most restaurants and grocery stores. The grocery stores and seafood markets will usually steam them at no extra charge and box them to go (or pack them in dry ice to take home!)
A drive down Rt 1 will offer a variety of roadside lobster shacks between Ellsworth and Bar Harbor. You'll find many a local fisherman selling their daily catch roadside with a sign in front of their homes. For fresh off the docks lobsters a visit to Stonington is in order.
Whale watching tours and visits to see the Puffins are another great way to spend your day. Contact The Ellsworth Chamber of Commerce for all the updated activities and available schedules.