Every location has a soundscape. Not only does it exist on land but in the ocean. The creatures that live in these environments are part of the soundscape, including the ones that echolocate. When animals such as bats and dolphins emit the sounds that detect the landscape around them they are contributing to the soundscape. These sounds that are used for echolocation are part of the natural soundscape unlike those of emitted by sonar and radar used by the military. When sonar and radar release the sound pulse it creates noise pollution, disturbing and disrupting the natural soundscape. It can prove hazardous for animals that use echolocation. Sonar sounds in some cases cause temporary deafness in dolphins and has been linked to cases of marine life that use echolocation stranding themselves.
The sound clip is that of the undisturbed natural soundscape of a bat. In the background it is possible to hear normal nighttime sounds including that of a cricket. The main sound is that of the bat while using echolocation to navigate and hunt. Each screech that the bat produces enables it to determine the terrain including the difference between land and water along with the location of any passing insects. Military radar and sonar use the same system except that instead of insects they are searching for passing enemy planes, ships and submarines.