Apparently there's 12. We have no idea!
This album cover is a still image but it definitely doesn't look like it. Someone make it stop!
Here's an illusion from Japanese artist Akiyoshi Kitaoka. It's aliiiiiive!
They said this isn't really moving but we don't believe them
This one is really weird. If you stare at the red dot really hard, you might see a pink outline round the edge.