Bass Harbor Marsh is located on the western side of Mount Desert Island and is the largest area of salt marsh in Acadia. A small estuary is formed where freshwater streams meet the sea, with brackish (part saltwater, part freshwater) conditions influenced by the twice-daily tides. Bass Harbor Marsh has been severely impacted by invasive plant species that have displaced the native species that support a greater diversity of wildlife.
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Last updated: April 5, 2023