Echolocation is nature’s built-in sonar. Here’s how it works. – National Geographic UK

Natures own sonar system, echolocation occurs when an animal emits a sound wave that bounces off an object, returning an echo that provides information about the objects distance and size.
Over a thousand species echolocate, including mostbats, all toothed whales, and small mammals. Many are nocturnal, burrowing, and ocean-dwelling animals that rely on echolocation to find food in an environment with little to no light. Animals have several methods for echolocation, from vibrating their throats…

Click here to view the original article.