 The swimmer exhibits a rich behavior: it can settle into a straight trajectory in the channel , or can navigate from one wall to the other , depending on confinement.
<clarity>  The swimmer exhibits a rich behavior: it can settle into a straight trajectory in the channel , or can navigate from one wall to the other , depending on confinement.
 The swimmer exhibits a rich behavior: it may settle into a straight trajectory in the channel , or can navigate from one wall to the other , depending on confinement.