Lovely to meet one of my favourite shells actually alive today : two wee Tortoiseshell Limpets (Testudinalia testudinalis) living in this old Mya shell in Loch na Lathaich in Mull. I'e only ever seen their wee empty shells on beaches before (very rarely). Obv. I put them back in the sea after this photo 😊 🥰 #SeaShells #Mull #Limpets #Mollusca