Figure 8. There are also clear differences in yaw stability at different angles of attack.

A, At 0, some postures are more stable in yaw than others. B, At 60, postures that were stable at 0 may go unstable, such as tent posture. C, At 90, all postures are marginally stable due to symmetry (lines flat, yawing does not alter position relative to flow). Color represents the base posture: red for sprawled, blue for tent. Organisms may have navigated this transition from 90 to 0.