Littoraria nebulosa (Lamarck, 1822) Cloudy Periwinkle

    On toppled tree on beach, Big Talbot Island State Park, Jacksonville, Duval County, Florida 9/1/2017. This is the first time that this species has been recorded from northeast Florida - a distance of about 200 miles north of where it has thus far been recorded from Florida's Atlantic Coast. The much smaller snail pictured on the far left is Echinolittorina placida Reid, 2009 Calmwater Periwinkle which shares the habitat.