Common Piddock (Pholus dactylus)
Everything Else | |
---|---|
Bonnet Shell | Common Limpet |
Black Footed Limpet | China Limpet |
Slipper Limpet | Common Tusk Shell |
Cowrie Shell | European Cowrie |
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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.