A suction pump is a device that creates a vacuum to draw fluids or gases from one location to another. It operates by reducing the pressure inside a chamber, allowing atmospheric pressure to push the fluid into the pump. Suction pumps are commonly used in various applications, including medical procedures, industrial processes, and aquarium maintenance. These pumps can be powered by electricity, manual operation, or even engine power, depending on their design and intended use. They come in different types, such as diaphragm pumps, gear pumps, and centrifugal pumps, each suited for specific tasks and fluid types.