Figure 3: Comparison of the energy, lipid, and protein concentrations in population-level diets for time-since-recolonization zone (A), sea otter reproductive status/sex (B), and season (C). All calculations are made from the wet mass (as a sea otter would eat the item) and converted to dry mass for comparison. Zones are based on US Fish and Wildlife Service aerial surveys. Zone 1 is the area occupied for > 30 years, Zone 2 is the area occupied >15 years, and Zone 3 is the area occupied >7 years.