Lidar, short for Light Detection and Ranging, is a remote sensing technology that uses laser pulses to measure distances to objects and surfaces. By emitting rapid laser signals and measuring the time it takes for them to return, Lidar systems can create highly detailed, three-dimensional maps of environments, including underwater terrains and objects. This technology is widely used in fields such as autonomous vehicles, environmental monitoring, and archaeology for its accuracy and ability to capture fine details that are difficult to detect with other methods.