Fig. 2.

Scaling with the body length under the condition of constant number of cilia $N$. (A) The body length changes from $2a/L$ = 10 to 30. (B) Drag coefficient. (C) Time-averaged swimming velocity. (D) Time-averaged power. (E) Swimming efficiency with different metachronal waves. $a$ is the body radius, $F$ is the drag force, $U$ is the swimming speed, $L$ is the ciliary length, $\mu$ is the viscosity, and $T$ is the period.