is a method of sensory perception by which certain animals orient themselves
to their surroundings, detect obstacles, communicate with others, and find
echolocation a series of short, high-pitched sounds are emitted by an animal.
These sounds travel out away from the animal and then bounce off objects and
surfaces in the animal's path creating an echo. The echo returns to the animal,
giving it a sense about what is in its path. A bat can determine an object's
size, shape, direction, distance, and motion. This echolocation system is
so accurate that bats can detect insects the size of gnats and objects as
fine as a human hair. Scientists would like to know more about how bats use
echolocation so they can help blind people detect objects with sound.