Underwater lighting refers to the use of artificial lights placed beneath the water's surface to enhance visibility and aesthetics. Commonly used in pools, aquariums, and natural bodies of water, these lights can create a beautiful ambiance and improve safety during nighttime activities. There are various types of underwater lights, including LED, halogen, and fiber optic options. Each type has its own benefits, such as energy efficiency or color variety. Proper installation and waterproofing are essential to ensure the longevity and effectiveness of underwater lighting systems.