A shark on Main Street?

After a big storm, a photo spreads around the class: in a flooded street, a huge shark is swimming. Between two cars. In the middle of town.

"Whoa!" Ben shouts. "That's right around the corner from us!"

Lina looks closer. The shark looks kind of ... weird. Too big. The waves around it don't match. And the water? Way too clean for a flood.

She types the title into a search engine. The same picture has been showing up for ten years — after every big flood, in different cities.

The shark was never real. Somebody glued two photos together and the whole world believed it.

Online, not everything that looks like proof is actually proof. In this module you'll learn three simple tricks you can use to check for yourself.