Submersible pumps are devices designed to operate underwater, typically used for moving liquids from one place to another. They are sealed to prevent water from entering the motor, allowing them to function efficiently while submerged. Common applications include draining flooded areas, emptying swimming pools, and pumping water from wells. These pumps work by converting rotational energy into hydraulic energy, pushing water to the surface through a discharge pipe. Submersible pumps are often used in agriculture, construction, and municipal water systems due to their effectiveness and ability to handle various liquid types, including clean and dirty water.