Echolocation

Hello. Can you guess my secret? Imagine closing your eyes tight but still knowing exactly where your favorite toy is. That’s what I do. I help my friends, the bats and dolphins, 'see' with their ears. They send out a little 'beep.' and listen for the sound to bounce back. If it comes back fast, something is close. If it takes longer, it's far away. I am their secret superpower for finding snacks and playing in the dark.

For a very long time, people were puzzled by my bat friends. Way back in the year 1794, a curious man named Lazzaro Spallanzani watched bats fly perfectly in a pitch-black room. He wondered, 'How do they do it?'. He discovered that they needed their amazing ears to fly, not their eyes. But it was still a big mystery. Much later, in the year 1944, another scientist named Donald Griffin finally figured it out and gave me my official name. He called me Echolocation. It’s a fancy way of saying 'finding things with echoes.'

I don't just help animals. I taught people how to use my trick, too. Big ships use a special version of me to find their way in the deep, dark ocean. Doctors use my echoes very gently to take the first pictures of babies before they are born. I show everyone that there are many amazing ways to see and explore the world. All you have to do is listen.