Fig. 3
Angular velocity and dynamic acceleration with max dive depth at a given current depth. Relationships between max dive depth in each dive and a, b the angular velocity RMS and c, d the dynamic acceleration RMS at a given current depth from each species (open circle ADPE, filled circle BRGU, cross RHAU) (at 5 m, N = 211, 14, and 101, respectively, for ADPE, BRGU, and RHAU in a, c, and at 10 m, n = 160, 15 and 98, respectively, for ADPE, BRGU, and RHAU in b, d). The relationship can be described by the following linear equations: (a) (at 5 m) ADPE: y = 0.55x + 38.26, BRGU: y = 1.76x + 57.89, RHAU: y = 2.25x + 83.46. (b) (at 10 m) ADPE: y = 0.38x + 33.78, BRGU: y = 1.16x + 49.47, RHAU: y = 1.31x + 59.24. (c) (at 5 m) ADPE: y = (2.04x + 217.80) × 10−3. (d) (at 10 m) ADPE: y = (1.18x + 217.13) × 10−3. Significant linear relationships are also represented as lines. Please see Additional file 3: Table S2 for details of the results of regression analysis