One of the mysteries of the English language finally explained.
A burrowing bivalve mollusk which has a highly convex, almost spherical, shell.
- ‘Coarse gravels and sands are home to sea-cucumbers and dog cockles, largely buried for protection, and tough sea-mats, able to withstand the scouring of water-borne sand.’
- ‘Some 68% of the species are encrusters and form colourful, circular, or linear patches on hard substrata, especially dead scallop shells and dog cockles.’
- ‘Further north in the lough the waters slow and coarse submarine sand dunes are inhabited by a type of sea-cucumber and dog cockles.’
- ‘There is plenty of life, judging by the number of shells lying around, including razor shells, big Arctica islandica and dog cockles.’
- ‘Note the brown colour of the dog cockles, indicating that the sand is polluted by mud.’
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