What is the function of a hydrophone?

A hydrophone is specifically designed to detect and receive sound waves underwater. It operates by converting acoustic energy into electric signals, allowing researchers and engineers to record, analyze, and interpret sounds in marine environments. These devices are essential for various applications, including underwater communication, marine biology studies, and oceanographic research.

The other functions listed, such as emitting sound, measuring temperature, and detecting pressure, are characteristic of different tools or instruments used in oceanography and environmental monitoring. For instance, sonar devices emit sound to map the seafloor, thermometers measure temperature, and pressure sensors are used to monitor water column changes. However, a hydrophone's primary and defining function is the reception of sound, making it crucial for understanding underwater acoustics and marine life dynamics.