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 find submarines?DOSITS WebinarsBlue WhaleAbout DOSITSHow is sound used to estimate marine mammal abundance?Reference List: Animals and SoundEchosounders Chris Knowlton2020-12-28T15:58:31-05:00