What are the most famous unsolved internet mysteries?

The internet is like a big playground where everyone can play, but there are some puzzles that even grown-ups can't solve yet, and they're super famous.

Imagine you have a secret message in a bottle, and it gets sent all around the world without anyone knowing who wrote it. That’s kind of what happened with The Zodiac Killer, someone sent strange letters to newspapers, and no one has ever found out who they were or where they went. It's like playing hide-and-seek but nobody knows where the person hiding is.

Another mystery is like a lost treasure map in the ocean, it's called The Bermuda Triangle. Ships and planes sometimes disappear there, as if the sea swallowed them whole! No one has found out exactly what happens to them, just like you might not know what happens when your toy boat goes under a wave.

There’s also The Mystery of the Vanishing Hikers, who walked into the woods and never came back. It's like going on a picnic and then suddenly being gone, no one knows where they are or why.

These internet mysteries are like big riddles that people solve together, trying to find answers just like you might try to figure out what happened to your missing sock!