(Courtesy of Jerry Prezioso)
European Periwinkle, Common Periwinkle|
This edible species is brown or black with whitish spiral lines and grow up to 1 1/4" (3 cm) long. Introduced in the 1840s in Canada, it spread south to New England, arriving in New Jersey by 1880. It is the most common periwinkle in the intertidal zone, and is found in marshes, on rocky shores, on mudflats, and on pilings.