hydroacoustic survey

A hydroacoustic survey is a method used to study underwater environments and fish populations using sound waves. Researchers send out sonar signals from boats or equipment, which travel through the water and bounce off objects like fish, the seabed, or submerged structures. By analyzing the returning echoes, scientists can determine the location, size, and number of fish or other underwater features. This technique provides a non-invasive way to gather accurate data about aquatic ecosystems, helping with resource management, conservation, and scientific research.