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Fig. 2. Fluke-beat frequency, f (Hz), as a function of length-specific
swimming speed, U/L, where L is the body length and
U is the swimming speed. Regression equation for all the cetacean
data is: y=0.89x+0.59 (r2=0.8,
N=267). Symbols indicate particular cetacean species: Tursiops
truncatus (solid red circles), Pseudorca crassidens (open green
squares), Orcinus orca (solid blue triangles), Globicephala
melaena (blue crosses), Lagenorhynchus obliquidens (solid blue
diamonds), Stenella frontalis (open brown diamonds) and
Delphinapterus leucas (solid black triangles).