endangered endangeredany species that is in danger of extinction Related Articles: Glossary: critical habitatGlossary: threatenedShip Quieting TechnologiesUsing Drones to Deploy Digital Acoustic TagsManateeAcoustic Fish TagsCommercial Vessel TrafficEffects Tutorial IntroductionHow is acoustics used to monitor Arctic marine mammals?Ocean Sound Policies Chris Knowlton2017-02-26T20:09:58-05:00