Echolocation is a navigation system that is used by various animals, such as bats, dolphins, whales and some species of birds, in order to navigate and locate objects in their environment. These animals emit high-pitched sounds that bounce off objects in their surroundings and then use the echoes of these sounds to determine the distance, size and shape of the object. This enables them to navigate effectively in the dark or in murky water, find prey and avoid obstacles. Echolocation is an example of an adaptation that has evolved in certain animals to help them survive and thrive in their environment.