great piddock

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great piddock

clam

Also known as: Zirfaea crispata

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In piddock
The great piddock (Zirfaea crispata), which attains lengths of up to eight centimetres (about three inches), occurs on both sides of the Atlantic Ocean. Found from the intertidal zone to depths of 75 metres (250 feet), Z. crispata bores into limestone and wood.
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