The littorina littorea shells are abundant on Scandinavian shores. In fact, they gave name to the Littorina Sea, the larger and saltier forerunner of today’s Baltic Sea. They're the tiny ones among the mussels and oysters.
Blue mussels, littorina littoria and heart cockles from the south Swedish peninsula Kullahalvön, oysters from our local bistro, all edible. Bon appetit!
Oysters, blue mussels and littorina littorea
Inner and outer rim: European cockles