South Freeport Town Wharf where the Pamela B departs for Eagle Island is a busy place in the spring and summer. Russ Dillingham/Sun Journal

Captain Peter Milholland steers the Pamela B on a trip from South Freeport Harbor on a recent excursion to Eagle Island. Russ Dillingham/Sun Journal

On the way out to Eagle Island, passengers learn about many of the local items of interest, including the history of Casco Castle in South Freeport. Russ Dillingham/Sun Journal

A catamaran sails past Eagle Island in June. Russ Dillingham/Sun Journal

Pamela B deckhand, Laura Vitali, right, points out items of interest on a map to a passenger, Deborah Stokes while traveling to Eagle Island last month. She and her husband were visiting from Colorado with their daughter and son in law. Russ Dillingham/Sun Journal

John Stokes, from Colorado, middle, and his daughter Maya, left, and son-in-law Jacob Dummeldinger relax on the Pamela B on their way to Eagle Island last month. Russ Dillingham/Sun Journal

Assistant Park Manager, Chloe Kilborn, right, waits for the Pamela B to dock on Eagle Island to pick up passengers during a recent tour. Russ Dillingham/Sun Journal

Assistant Park Manager, Chloe Kilborn heads back to the island after ferrying visitors to the island back to their boat last month. Russ Dillingham/Sun Journal

Unique rock formations and a rocky coast offer visitors breathtaking views and plenty of things to explore. Russ Dillingham/Sun Journal

Sailboats cruise past the caretakers cottage on Eagle Island. Russ Dillingham/Sun Journal

Visitors to the island enjoy a picnic lunch on the lawn as seen from the wrap-around porch of the Admiral Robert Peary home in Casco Bay off the coast of Harpswell. Russ Dillingham/Sun Journal

Jacob Dummeldinger, left, and his fiance, Maya Stokes, explore a tidal pool on the coast of Eagle Island during a recent visit. Russ Dillingham/Sun Journal

Jacob Dummeldinger, right, skips rocks into the Atlantic Ocean in a cove on Eagle Island during a recent visit to the island. Russ Dillingham/Sun Journal

A seagull flies off with a crab on Eagle Island. Russ Dillingham/Sun Journal

A life-size cutout of artic explorer Admiral Robert Peary stands on the porch of his home on Eagle Island. Russ Dillingham/Sun Journal

The visitors center on Eagle Island. Russ Dillingham/Sun Journal

Rock formations along the shore of Eagle Island add to the beauty of the island. Russ Dillingham/Sun Journal

A visitor to Eagle Island peers through a window into the home of Admiral Robert Peary last month. The house and museum is currently closed because of a mold problem that state officials are still assessing. Russ Dillingham/Sun Journal

Rose bushes abound throughout Eagle Island and surround the home of explorer Admiral Robert Peary. Russ Dillingham/Sun Journal

A visitor looks out to sea on the wraparound deck of the Admiral Peary home on Eagle Island. Russ Dillingham/Sun Journal

A seagull lets visitors know to stay away from its nest on a high bluff next to Admiral Peary’s home on Eagle Island. Russ Dillingham/Sun Journal

Seals on one of the Upper Green Islands off the coast of Harpswell bask in the sun and keep an eye on boats passing by. Russ Dillingham/Sun Journal

An osprey sits on its nest on an island in Casco Bay. Passengers on the Pamela B saw seals, terns and other coastal wildlife on their way to Eagle Island. Russ Dillingham/Sun Journal

Visitors walking around the wraparound porch are framed by an unfinished section of the Admiral Peary house on Eagle Island. Russ Dillingham/Sun Journal