biologically significant biologically significantan action or activity that affects an animal’s ability to grow, survive, or reproduce. Related Articles: Behavioral Changes in MammalsBehavioral Changes in FishesTutorial: Mammals - Behavior ChangesCommercial Vessel TrafficTutorial: Commercial Vessel TrafficPotential effects of sound on marine mammalsMasking in FishesTutorial: Mammals - MaskingHearing Loss in MammalsTutorial: Mammals - Hearing loss Chris Knowlton2017-02-26T20:09:57-05:00