The common periwinkle is common on the shores of the UK and on the shores of France but virtually absent from the shores of Guernsey, Channel Islands. In Guernsey the periwinkle is replaced by topshells - particularly the toothed topshell, Oselinus lineata, and the purple or flat topshell, Gibbula umbilicalis. This is an image of a periwinkle, Littorina littorea, in a tide pool at Cullercoats north of Tynemouth on the North Sea coast of England. Photographed on the 18 March 2007.
File No. 180307 7099
©RLLord
fishinfo@guernsey.net

The common periwinkle is common on the shores of the UK and on the shores of France but virtually absent from the shores of Guernsey, Channel Islands. In Guernsey the periwinkle is replaced by topshells - particularly the toothed topshell, Oselinus lineata, and the purple or flat topshell, Gibbula umbilicalis. This is an image of a periwinkle, Littorina littorea, in a tide pool at Cullercoats north of Tynemouth on the North Sea coast of England. Photographed on the 18 March 2007.
File No. 180307 7099
©RLLord
fishinfo@guernsey.net