Fig. 2

A typical example of changes in three-axis acceleration associated with a shrimp-eating, b fish-eating, c crab-eating, d others (routine) and e others (escape). f A schematic diagram of three phases, i.e., commencement phase (CP), transition phase (TP) and final phase (FP), demarcated by border times t S and t E . The horizontal axis shows the time elapsed from the trigger point, and the vertical axis acceleration