Piddocks – anything but boring

How interesting! What a great blog!

The Hazel Tree

Just recently we were pottering happily along a pebbly beach on the island of Lismore, and some of the stones that we were picking up looked like this:

piddock-art

Just one pebble with a hole in it you could probably accept as a happy stroke of luck – but there were many more!   Some had just one hole, beautifully drilled and smooth on the inside, just wide enough to put your little finger in;   others were perforated with a network of tiny tunnels, so that if you held one up you could see a thousand pinpoints of light. But how do these holes occur?   They are certainly not caused by the sea.   The culprit is a mollusc, and it is called a piddock.

WHAT ON EARTH ARE PIDDOCKS?

photo via Wikimedia photo via Wikimedia

Piddocks are bivalves, and their specially-adapted oval shells are edged with fine teeth which they use to excavate burrows…

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