Fig. 1.

Snake's strike and fish response for fish approximately parallel to jaws. (A) Schematic of snake position and events during a strike. Numbers represent sequential events. Numbers 1–3 show body movements before strike an arrowhead marks inflection of the neck during a feint. (B) Frames from high-speed video; (C) Hydrophone recording of strike showing pressure change (1–3) associated with feint—Y units arbitrary. Numbers show events illustrated in A. Tick marks represent TTL from camera (2,000 fps) correlating movie to hydrophone. Note that latency to C-start is appropriate for body feint (7 ms) but not for strike (4 ms). (D) Percent turns toward head during strike. (E) For these trials, the long axis of the fish intersected line segment P. SI contains a movie correlated to figure plates and hydrophone recording. Each TLL represents 1 frame in Movie S1.