Fig. 3From: Summing the strokes: energy economy in northern elephant seals during large-scale foraging migrationsField metabolic rates of northern elephant seals (Mirounga angustirostris) compared to Kleiber [43] predictions of mammalian basal metabolic rate (BMR) (dashed red line) and Boyd [12] predictions of marine mammal field metabolic rate (FMR) (dashed grey line), as a function of mass. Compared to seals during their short migration, seals of similar average body mass had 23 % lower FMRs during the long migration according to the equation FMR*LT = 5818 M0.26 Back to article page