cetacean cetaceanorder of mammals that includes whales, dolphins and porpoises Related Articles: Glossary: delphinidGlossary: dialectGlossary: MysticetesGlossary: passive acoustic monitoring (PAM)Hot Topic - Guidance on Determining Potential Effects to Marine Mammal HearingHot Topic - Mass StrandingCommercial Vessel TrafficAbout DOSITSPotential effects of sound on marine mammalsEffects Tutorial Introduction Chris Knowlton2018-01-22T22:01:23-05:00