Fig. 3. Seals must spend most of the day foraging to achieve a sufficient number of feeding event for positive energy balance.

(A) Density plot of foraging time versus number of feeding event, together with a fitted exponential curve from the 45 seals that adopted pelagic foraging on small fish. (B) 3D relationship of drift rate changes (i.e., index of lipid gain rate; z axis) projected against daily foraging time and the number of feeding event, showing how lipid gain depends on foraging time and success.