Figure 8From: A simple procedure for the comparison of covariance matricesBack and opercular view of shells of the lower-shore Su (left) and upper shore Rb (right) morphs of Littorina saxatilis form the Galician coasts. The seven measures used are shown on the Su shell. Note: Rb snails are on average larger than Sus; shells of similar sizes were chosen to ease comparison on the image.Back to article page