Figure 3.

Observed swimming tracks from two different microscopic preparations of the vibrioid bacteria when leaving the band toward the oxic region. (A) The consecutive positions (time steps, 0.24 s) of the bacteria are indicated by dots along the tracks. Large dots mark the beginning of the tracks. Arrows indicate deviations from the overall U shape of the tracks. (B) Six different tracks at higher resolution showing the two-dimensional projections of the bacterial shape at consecutive positions (time steps, 0.04 s) along their swimming paths. Arrows indicate starting positions.