Figure 3:

Diving metabolic rates (DMRs) of separate dive components calculated from the diving costs for Steller sea lions performing three dive types to 10 and 40 m. Dive types were as follows: transit dives with no bottom time; dives with 3 min of non-active bottom time; and dives with 3 min of active bottom time. Dive components include ‘transit’ (the cost of diving to and from depth), ‘stationary’ (the cost of being at depth with little to no activity) and ‘active’ (the cost of actively swimming at depth). Each box represents the calculated dive component for six dive trials from each of the four animals for a total of 24 trials for each dive component. Transit dives were significantly more costly than stationary or active components. Depths were combined because there was no statistical difference between 10 and 40 m.