Are Bats Blind?

No, bats are blind when they are born, but their vision eventually develops. People probably think that this myth is true, because bats dart around. They are actually hunting insects, but people can't see the insects through the darkness. They "see" using sonar waves. They emit a high frequency sound, that humans can't hear, and the sound waves bounce back to them, telling them where the object is, similar to the way radar works. - John Baskin