Figure 6: Seasonal variation in the nutrition of sea otter prey (A and C are clams, and B and D are sea cucumbers. Circles are individual samples and dotted lines are the mean, with percent on the left axes) and frequency of occurrence of that prey species in the diet (red solid lines, with percent on the right axes). A and B are energy density (kilocalorie per dry gram), and C and D are lipid content (percent per dry gram).