A Hydrophone is a passive acoustic sensor that listens for earthquakes, sea creatures, and human-generated noise in the ocean. The Low Frequency Acoustic Receiver (Hydrophone) measures acoustic signal of wind, rain, and seismic t-phases on the seafloor.

(text and images courtesy of Interactive Oceans)

Data Products

This instrument measures the following data products. Select a data product's name to learn more.

Data Product Code DPS
Low Frequency Acoustic pressure waves HYDAPLF DPS

Instrument Models & Deployed Locations

The OOI includes the following instrument makes and models for this instrument type. Follow the links below to find out where in the OOI this instrument has been deployed. You'll also find quick links for each instrument to Data portal, where you can plot and access data.

Class-Series Make Model

Primary Science Discipline


Research Themes


Access Data

HYDLF on the Data Portal