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Leaving Marshall Island after a rainy night at anchor, Glen sails east toward Mason Ledge, a long-time seabird colony. Along the way, he notes loons now commonly seen on saltwater in summer, lines of black guillemots, and flocks of southbound semipalmated sandpipers.

Anchored in Boxam Cove on Marshall Island, Glen reflects on a rainy night lit by the glow of bioluminescent plankton. Morning brings fog, eagles, schools of fish, and the striking contrast of dark spruce forests against patches of blue sky as Glen shares the beauty and solitude of Maine’s wild offshore islands.

As Glen sails past Roberts and Brimstone Islands south of Vinalhaven, he reflects on decades of baseline research in collaboration with Maine Coastal Islands National Wildlife Refuge—mapping vegetation, inventorying plants, and surveying birds to track long-term ecological change. Along the way, he shares the challenges of island fieldwork, a close puffin sighting far from a breeding colony, and the occasional mishap with lobster buoys.

Drifting in Penobscot Bay, Glen shares the sounds of a ringing bell buoy, a close encounter with harbor porpoises, and surprising concentrations of moon jellyfish. When the sea breeze arrives, he sails south of Vinalhaven, reveling in a fast and lively run along the Maine coast.

In this episode, Glen shares observations about terns, cormorants, black guillemots, and eider as he sails Maine’s midcoast, from seabird-rich Muscongus Bay to the narrow Muscle Ridge Channel.