alikreukels or giant periwinkles are sea snails with a low spiraled shell

seashell great periwinkle sea animal endangered species beauty tropical urchine exotic marine gourmet snack white diet seafood cuisine food market mother pearl meal shellfish spiral snail water gastropod wildlife beautiful seashore urchin mollusk turban natural giant alikreukel nature closeup shell alikreukels periwinkles snails low spiraled round opening good dishes