Fig. 10. Approach path with irregular velocity changes before the fly's impact at
the water surface. Path of falling fly (open circles, calculated projection
onto the plane of the water surface) and of responding fish (filled dot
indicates the head) sampled every 20 ms. Each sample is shown. Arrangements of
panels A-C and the ordinate scale in B and C are as in
Fig. 8. Despite speed changes
(B), the bearing (C) of the fish's movement is held throughout the
approach.