Echolocation is a biological sonar used by certain animals, such as bats and some insects, to navigate and locate prey in their environment. It involves emitting sound waves and interpreting the echoes that bounce back, allowing these creatures to determine distance, direction, and even azimuth. Bats are particularly adept at using echolocation to hunt in darkness, while some insects, like crickets, utilize sound for mating purposes. The discussion also touches on human directional hearing, which, while not echolocation, demonstrates the ability to locate sounds based on their direction. Overall, echolocation is a complex process that extends beyond mere distance measurement to include spatial awareness and orientation.