Fig. 5. (A) 3-D rendering of a pseudotrack computed for a foraging event at 675 m depth. The black line marks the swimming track of the whale moving right to left through a 20 s period around a prey capture event. Each dot on the line marks a click, and it is seen how the whale switches from regular click mode to buzz mode (bordered by circles in 2-D projections) with a high repetition rate. Coloration of the dots signifies the roll of the animal. Dark blue is dorsal side up and red is ventral side up. Note how the animal rolls up-side down during the prey interception. Dashed lines in x-y, x-z and y-z planes show the projected 2-D swim track. The closing speed is 1 m s^-1. (B) Plot of time before impact (time 0) and target range estimated from a constant swimming speed (blue line) relative to the target and measured from the echo delay (red line and dots). The good fit supports the conjecture that the impact sound was caused by interception of the ensonified target and that movements of the whale were associated with capture of that given prey.