Figure 7
From: Ultrastructure of setae of a planktonic diatom, Chaetoceros coarctatus

Observations of a dead colony of C. coarctatus in a flow of water in a microchannel 1 mm in diameter. Schematic illustration of the flow system including the microchannel (a), an optical microscopy image of a colony of C. coarctatus in the microchannel (b), a schematic illustration of the angle of a colony in the microchannel (c), and the distribution of the angle of a colony (d).