Soft bodied animals with a hard outer case (sort of crunchy with a soft centre!). These animals move on a broad flatted foot. Conch, Limpets, Winkles, Whelks, Mussels, Oysters, Scallops, Barnacles.
An assortment of periwinkles on the beach on Arran, Edible Periwinkle (Littorina littorea) and Flat Periwinkle (Littorina Littoralis) found on mud flats and amongst bladderwrack seaweed on the seashore.
