1. Akera bullata. Final whorl of shell separated from penultimate whorl by a slit near the suture. Slit in earlier whorls sealed with membrane, but breaking open again on this beached shell. Fleet lagoon, Dorset. April 2012. (Stacked image).
2. Akera bullata. Final whorl of shell separated from penultimate whorl by a slit near the suture. Slit in earlier whorls sealed with membrane, but breaking open again on this beached shell. Fleet lagoon, Dorset. April 2012. (Stacked image).

Akera bullata. Final whorl of shell separated from penultimate whorl by a slit near the suture. Slit in earlier whorls sealed with membrane, but breaking open again on this beached shell. Fleet lagoon, Dorset. April 2012. (Stacked image).