Side-scan sonar is a technology used to create images of the seafloor and underwater objects. It works by emitting sound waves from a towed or mounted device, which then bounce off the seabed and return to the sensor. The time it takes for the sound waves to return helps determine the distance and shape of underwater features. This method is commonly used in marine exploration, archaeology, and search and recovery operations. By providing detailed images, side-scan sonar helps researchers and divers locate shipwrecks, underwater structures, and other objects of interest without the need for extensive diving or excavation.