Microchiropteran bats and toothed whales are the only taxa to echolocate for prey. The two biosonar systems have evolved independently, in media with very different physical properties that determine the production, propagation, and reflection of sound, as well as the means and speeds with which the echolocating predators and their prey can move and maneuver. Yet, they have converged on remarkably similar acoustic behavior; the animals adjust the timing and level of their sound emissions as they near their targets, eventually entering the buzz phase with high rates of low-amplitude signals. But while the buzz of a bat lasts a fraction of a second, prey pursuits by toothed whales are one to two orders of magnitude longer. Here, we explore these differences and their consequences for biosonar performance and prey capture success. We use echograms recorded with acoustic dataloggers on porpoises to show that, like some bat species, porpoises hunt in different environments targeting several types of prey and adjusting their biosonar outputs to manage different acoustic soundscapes. However, we further show that, unlike bats, porpoises are able to carefully track their prey with adjusted click intervals and dynamically accommodate prey movements to provide high spatial resolution without range ambiguities.