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Fig. 5 | Movement Ecology

Fig. 5

From: Fine-scale foraging movements by fish-eating killer whales (Orcinus orca) relate to the vertical distributions and escape responses of salmonid prey (Oncorhynchus spp.)

Fig. 5

Comparative kinematic tortuosity variables between the three identified dive types made by 30 tagged northern resident killer whales (F = foraging, R = respiration, O = other behaviors; N = 11,319 total dives from 31 tag deployments). The straightness index, indicating relative tortuosity, was calculated in two dimensions (x-y plane only) over entire dives and in three dimensions for the descent and ascent phases. Lower values of the straightness index indicate more convoluted paths of whale movement, while values approaching 1 indicate directional, straight-line paths

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