The behaviour of the edible winkle, littorina littorea l. in rock pools on shores differing in their degree of pollution

The variability in distribution and behaviour of the Edible winkle, Littorina littorea L, in rock pools has been examined on an unpolluted shore. The influence of physio-chemical fluctuations in the pool environment is discussed. Two stretches of polluted coast were then investigated to discover any differences in distribution and behaviour which might be attributable to pollution. A number of experiments were conducted on the shore to observe the response of winkles in pools to the introduction of various noxious chemicals.