Fig. 7. Kinematic chronology of four representative flicks produced by a Palinurus elephas individual. (A) The lateral flagellum is shown at the starting position (arbitrarily set as zero) in which it is opened at a maximum distance from the medial flagellum. Then, the flagellum rapidly closes (red bracket) and slowly opens (blue bracket) four times. (B) The closing phase (red bracket, negative speed values) is faster and of shorter duration than the opening phase (blue bracket, positive speed values) of each flick.