Fig. (1) Schematic representations of: A. Typical two-dimensional (time-depth) dive profiles recorded by free-ranging elephant seals (Mirounga spp.) during periods of travel (transit), rest/digestion (drift) and feeding. Benthic (bottom) dive profiles are constrained by depth and therefore have flat-bottom phases compared with mid-water (pelagic) dive profiles. Feeding dives contain a number of brief excursions between depths. B. Within dive behaviours of southern elephant seals (M. leonina) during type Eb benthic foraging dives known as “wiggles” (Source: Sala et al. 2011). Note the orientation of the seal during the bottom phase of the dive profile is consistent with that observed directly (van den Hoff et al. (2017). C. Changes in stomach temperature with swim speed and depth during Type D dives. The precipitous drop in stomach temperature recorded at the sea-surface has been suggested as indicative of surface seawater drinking (Source: Horsburgh et al. (2007).