Flat periwinkle (Littorina obtusata)

Species information

Flat periwinkle © www.osfimages.com	Flat periwinkle feeding on seaweed © Niall Benvie / naturepl.com	Flat periwinkle showing foot © www.osfimages.com
Flat periwinkles © Matt Bain / www.nhpa.co.uk	Flat periwinkle shells © Niall Benvie / naturepl.com