passive acoustics passive acousticslistening to sound sources; sound is only received. Synonyms: passive sonobuoys Related Articles: Biological OceanographerHot Topic- Passive Acoustic Monitoring Critical to Vaquita Conservation EffortsChanges in Baleen Whale VocalizationsHow is sound used to study marine mammal distribution?How is sound used to find submarines?DOSITS WebinarsBlue WhaleWebinar Archive: Passive Acoustic Monitoring OverviewAbout DOSITSHow is sound used to estimate marine mammal abundance? Chris Knowlton2020-12-28T15:58:31-05:00