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Wales Beach Guide

Common Piddock (Pholus dactylus)

Helical Shells
Large Necklace ShellCommon Whelk
Red WhelkCommon Spindle Shell
Common WinkleFlat Periwinkle
Dog WhelkNetted Dog Whelk
Sting WinkleGrey Top Shell
Painted Top ShellPurple Top Shell
Thick Top ShellTower Shell
Needle ShellCommon Wendletrap
Acteon ShellPelican's Foot Shell
Bivalves
CockleDog Cockle
Prickly CockleNorwegian Cockle
Pullet Carpet ShellCross-cut Carpet Shell
Banded Carpet ShellSmooth Clam
Iceland CyprinaCommon Mussel
Otter ShellSand Gaper
Blunt Gaper
Common Piddock
American PiddockWhite Piddock
Blunt TellinRayed Artemis
Smooth ArtemisWarty Venus
Peppery Furrow ShellEdible Oyster
Portuguese OysterSaddle Oyster
King ScallopQueen Scallop
Variegated ScallopHunchback Scallop
Tiger ScallopStriped Venus
Thick Trough ShellCut Trough Shell
Rayed Trough ShellBanded Wedge Shell
Faroe Sunset ShellThin Tellin
Baltic TellinBean Tellin
Pod RazorRazor
Bean RazorCurved Razor
Everything Else
Bonnet ShellCommon Limpet
Black Footed LimpetChina Limpet
Slipper LimpetCommon Tusk Shell
Cowrie ShellEuropean Cowrie
Common Piddock

The Common Piddock bores into soft rock or wood, and can reach a length of about 6 inches. The shell is white and very brittle with concentric lines and radiating ridges. This species is known for being bioluminescent, glowing a bluish-green in the dark. Also known as angel-wings, from the appearance of both shells when still joined together.


Found at : The Warren