Movement
Cilia are the locomotive structures of the Paramecium. In order for the Paramecium to move forward, its cilia beat at a 120-degree angle, backwards in unison (i.e., the cilium wiggles from tip-to-base). This means that the Paramecium moves by spiraling through the water on an invisible axis. The Paramecium can also move backwards when the cilia beat forward at an angle in unison.
If the Paramecium hits an obstacle it moves back, turns slightly and goes forward again. If it runs into the solid object again, it will repeat this process until it can get past the object.
Read more about this topic: Paramecium
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