 
 
| Genus: Species: | 
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400
 150 μm; x 400
 
Navicula sp., 
cell body 52 μm long, 12 μm wide, 
x 400, Japan, 1998 by Y. Tsukii
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400
 150 μm; x 400
 
Navicula sp., 
cell body 46 μm long, 13 μm wide, 
x 400, Japan, 1998 by Y. Tsukii
 50 μm
 50 μm
 100 μm
 100 μm
 150 μm; x 400
 150 μm; x 400
