A pool skimmer is a device used to remove debris from the surface of a swimming pool. It typically consists of a basket that collects leaves, insects, and other floating materials, helping to keep the water clean and clear. Skimmers can be built into the pool's design or used as portable units. In addition to keeping the pool clean, skimmers also play a role in the pool's filtration system. They help circulate water, allowing it to flow through the pool filter and maintain proper chemical balance. Regular maintenance of the skimmer is essential for optimal pool hygiene.