Fig. 8. Velocity vector (B) and vorticity contour (C) fields around the posterior edge of the carapace of the smooth trunkfish model positioned at yawing angles of attack of (left to right): 0°, 10°, 20° and 30°. The data are viewed in transverse planes, and sampling locations are indicated using illustrations of models viewed from above (A). Each plot is the mean result of 30 velocity fields (1 representative trial). The shadows underneath models represent areas that were shielded from laser light. Circulation magnitude and peak vorticity magnitude values for a dorsal vortex (_D and P_D, respectively) and a ventral vortex (_V and P_V, respectively) are included beneath the vorticity contour plots.