Where the Periwinkle Roam

Where the Periwinkle (Littorina littorea) Roam. An interesting story of an invasive species. Introduced to the Atlantic coast of North America, possibly by rock ballast in the mid-19th century. First recorded sighting in the East was in 1840 in the Gulf of St. Lawrence. It is now abundant on rocky shores from New Jersey northward to Newfoundland. In Canada, its range includes New Brunswick, Nova Scotia, Quebec, Newfoundland and Labrador ~ from Wikipedia. Mary's Point, New Brunswick, Canada. Ramsar site no. 236.