Rocks with holes made by Piddocks 13

Rocks with holes made by Piddocks 13 – Rocks with holes made by Piddocks 12 – Common Piddock (Pholas dactylus) in situ in its shale rock burrow; antero-dorsal view; showing sharp rasping spines on the beaked valves of the shell around the pedal gape through which the foot is protruded in life. Washed ashore at Monmouth Beach in Lyme Regis, Dorset, England.