We have all seen them, I know I myself have shrugged those pesky little light floaters down to dust. But, they are nothing that you would have ever thought of.
They were more prevalent to me when I was a child; I was always outside looking up at the sky. I like most children tried to play with the amoeba-like floaters, move them around make them do what I wanted them to do. But, in reality our minds and our eyes can do amazingly curious things, and you will never even guess what it actually is!
Even though it still happens to me occasionally now as an adult, I finally know what they are thanks to TED-ed.