Well it lives in a viscous world - can't generate enough power to wag it's tail. Gliding motility - cyanobacteria, Beggiatoa etc. Inertia not important at Re Purcell, E.M. 1977. Life at Low Reynolds Number. The rotary motor is under complex control in bacteria.
Bacteria can measure change in conc.
See Science vol. Zoospores of Oomycetes and Chytrids show chemotaxis to nutrients esp. Borrelia arthropod-borne diseases Cristispira symbionts of molluscs, some very large . Figure 3.45 Endospores survive for years in a dormant state. There are some recent claims that endospores can survive for millions of years - but these claims are controversial.