ELI5: Explain Like I'm 5

Phantom islands

Phantom islands are like imaginary friends, but for grown-ups who love exploring the world. They are places that were once believed to exist, but turned out to be made up or simply misidentified.

Imagine if you went outside to play and your friend told you he saw a really cool park on the other side of town. You might be really excited to go see it! But then, when you got there you couldn't find it anywhere. You might feel disappointed, and wonder if your friend made it up or if he just got lost himself.

This is kind of like what happened with phantom islands. A long time ago, people used maps to explore the oceans and find new lands. But sometimes, they would come across an island that wasn't on the map. Maybe they saw it from far away and it looked like a small dot on the horizon, or maybe they heard about it from other sailors, who may have been making things up or mistaken about what they saw.

So they would draw it on their map, creating a new place that they thought existed. But as time went by, other sailors might try to find that island and discover that it wasn't there after all. Maybe it was just a trick of light or clouds. Maybe they got lost and never actually made it to the island. Or maybe it was there once, but sank into the ocean due to volcanic activity or tectonic shifts.

Phantom islands can be really interesting to learn about because they give us a glimpse into how people used to think about the world and try to understand it. But they also remind us that sometimes even the smartest people can be fooled by their own senses or imagination.