Acoustic surveying is a method used to gather information about underwater environments by utilizing sound waves. This technique involves sending sound pulses into the water and measuring the time it takes for the echoes to return. By analyzing these echoes, researchers can determine the depth of the water, the type of seabed, and the presence of marine life. This surveying method is commonly used in marine biology, oceanography, and environmental monitoring. It helps scientists and engineers assess habitats, locate underwater structures, and study the effects of human activities on aquatic ecosystems. Acoustic surveying is a non-invasive and efficient way to explore underwater environments.