Figure 3.

To investigate the ability of species with different body morphologies to stabilize their body in response to a hydrodynamic disturbance, sudden flow perturbations were generated (Webb 2004). (a) A strut oriented perpendicular to the flow direction (i) is quickly flipped 90° (ii). The resulting surge displaces fish similarly relative to the earth frame of reference regardless of body morphology. (b) A jet of water was directed at a specific location on the body to assess the recovery response time, revealing that fusiform-shaped fish can self-correct more quickly than laterally compressed fish.