Bacterial movement refers to the way bacteria move in their environment. Many bacteria use structures called flagella, which are long, whip-like appendages that rotate to propel the bacteria forward. Some bacteria can also move by using pili, which are short, hair-like structures that help them crawl along surfaces in a process called twitching. In addition to these methods, bacteria can exhibit a type of movement known as chemotaxis. This is when bacteria move toward or away from certain chemicals in their environment, allowing them to find nutrients or escape harmful substances. This ability to sense and respond to their surroundings is crucial for their survival.