What type of bacteria rarely shows active motility?

Cocci are a type of bacteria that typically appear in spherical shapes. One of their defining characteristics is that they generally do not exhibit active motility. Unlike other forms of bacteria, such as bacilli or spirochetes, which may have structures like flagella that enable them to swim or move through their environments, cocci usually rely on passive movement through external forces, such as the flow of liquids or air. This lack of active movement is why cocci are commonly found in clusters or chains depending on their division patterns, rather than moving independently in search of nutrients or in response to environmental conditions.