Seller: ebco1938 ✉️ (3,956) 100%, Location: Harlow, GB, Ships to: WORLDWIDE, Item: 111580033204 Hammer Oyster with natural attachment seashell. These bivalve Hammer Oysters (Malleus albus) are often found with attachments - in this case a half Thorny Oyster shell! I offer several so please allow for slight variations from the one in the photo, but they are all very similar and you won't be disappointed! £1 coin to show size/scale . Buy with confidence from Britain's longest established specialist shell dealer - original business started 1938 ! Type: Shells/ Coral/ Starfish, Shape: Natural