Which animals use echoes?

Many animals use echoes to find their way around, or to locate food or prey. Examples include:

- Bats: Bats are well-known for using echolocation to navigate and catch flying insects. They emit high-pitched sounds and then listen for the echoes that bounce back off objects. This information allows them to build up a mental map of their surroundings.

- Dolphins: Dolphins and porpoises use echolocation to navigate and hunt underwater. They produce clicks and listen for the echoes to locate fish, squid, and other prey.

- Whales: Some whales, such as sperm whales and beaked whales, use echolocation for hunting. They may produce a beam of sound that can stun or immobilize prey.

- Shrews: Some species of shrews use echolocation to navigate in dark underground tunnels. They produce high-frequency clicks and then listen for the echoes to determine the size and shape of the tunnels.

- Birds: Some birds, such as the oilbird and the swiftlet, use echolocation to navigate in caves. They produce high-pitched clicks and listen for the echoes to avoid obstacles and find nesting sites.