This hard-shelled molluscoid can move with remarkable agility on its gelatinous, eye-lined mantle, even flapping through air or water in a jellyfish-like fashion. Clamping down on prey, its toothed siphon sucks away blood.

   Sometimes, a grain of sand or even a fragment of bone from fresh prey becomes lodged in a clampire's soft inner body. Over time, it coats this foreign object with blood-laden mucus, creating a strange red pearl which causes curious mutations if ingested.