A harvestman is a small creature that looks like a spider but isn't one. You've probably seen them: they have a tiny round body and extremely long, thin legs that seem almost impossibly delicate. People often call them “daddy longlegs,” though that nickname gets confusing because some people use it for actual spiders too.

Harvestmen belong to a group called Opiliones, which are arachnids (relatives of spiders) but different in key ways. Unlike spiders, harvestmen don't make webs or produce venom. They have just one body section instead of two, and their eight legs can be many times longer than their body. If you gently touch one, it might drop a leg to escape, a trick called autotomy that helps them survive predator attacks.

You'll often spot harvestmen in gardens, forests, or basements during late summer and fall. They eat tiny insects, decaying plants, and fungi. Despite scary stories you might have heard, harvestmen are harmless to humans. Those ridiculously long legs help them move quickly through tall grass and over rough ground, feeling their way through the world as they search for their next meal.