noun
- underwater microphones used to detect and record sounds in water
Usage: technical; marine science
Examples
- Marine biologists use hydrophones to study whale songs.
- The research vessel deployed hydrophones to monitor ocean noise pollution.
- Hydrophones can detect submarine movements from great distances.
- Scientists placed hydrophones along the ocean floor to record seismic activity.
- The hydrophones picked up the sounds of dolphins communicating.
- Naval forces rely on hydrophones for underwater surveillance.