How do bats and dolfins use ecose?

Answer 1

Dolphins and bats both produce very high pitched sounds and have excellent hearing. The sounds bounce off of objects, creating a very faint echo, which is effected by the objects in the surrounding environment. Dolphins and bats hear this echo, and their brains formulate a mental image of where objects are, there shapes, their sizes, etc. Both dolphins and bats use this for navigation and to detect prey.