passive acoustics passive acousticslistening to sound sources; sound is only received. Related Articles: Underwater Sound and Coral Reef RestorationDOSITS WebinarsBlue WhaleWebinar Archive: Introduction to Underwater AcousticsAbout DOSITSWhat are soundscapes?How is acoustics used to monitor Arctic marine mammals?How is sound used to monitor and defend harbors?Hooded SealPassive Acoustic Recording Tags Chris Knowlton2020-12-28T15:58:31-05:00