Underwater cameras are specialized devices designed to capture images and videos beneath the water's surface. They are often waterproof and can withstand high pressure, making them suitable for activities like snorkeling, scuba diving, and marine research. Many underwater cameras come with features such as wide-angle lenses and built-in flash to enhance visibility in low-light conditions. These cameras can vary in complexity, from simple point-and-shoot models to advanced digital cameras with interchangeable lenses. Some popular brands include GoPro, Olympus, and Canon, which offer a range of options for both amateur and professional underwater photographers.