Fig. 3

Relationship between high-resolution and low-resolution foraging effort metric. Results of linear models fitted to investigate the relationship between the hunting_highres time (time spent in highly sinuous parts of high-resolution dives) and the hunting_lowres time (time spent in segments associated with vertical velocity ≤0.4 m s⁻¹ of low-resolution dive) for the Weddell seal (a) and the SES (b). The regression line of the model is represented in red. Grey points in figure b indicate the 141 likely drift dives associated with outlier residuals that were removed for the SES dataset (see “Statistical analysis”, Additional file 1)