Fig. 2.
Representation of the five optimal strokes for biflagellated swimmers computed numerically. Plots represent the curvature γi along one flagellum as a function of the arclength at successive times during the strokes. The corresponding stroke kinematics are illustrated by a sequence of shapes, for which all swimmers move to the right. (A–D) Strokes A–D are optimized for the swimming efficiency 
with initial guess given by (A) asymmetric and (B) symmetric small amplitude oscillations, (C and D) large amplitude oscillations. (E) Stroke E is optimized for the feeding efficiency 
and is found regardless of the initial guess. Values of 
and 
for each stroke A–E are indicated in the plot.