Shell morphology data of three <i>patella</i> limpets from coastal areas around the English Channel

This file contains shell morphological data of three Patella limpet species (P. vulgata, P. depressa and P. pellucida) from Portsmouth Natural History Museum collection and modern specimens. It is a data set for a marine biology article: A study of historic and modern Patella limpet specimens to detect environmental change in intertidal zones around the English Channel.