These ten great earthworm facts will convince you that the earthworm is an amazing creature. Test your own knowledge against these 10 great earth worm facts!

A reader recently sent in this image of a long, brown worm she found in her toilet. She is trying to determine if the worm is an earthworm or an intestinal parasite.

While light will not kill a worm on contact, the effects of sunlight will. If a worm spends too much time in direct sunlight, usually one hour, it will become paralyzed.

When earthworms mate, they cover themselves with sticky mucus. The sperm fertilizes the eggs. Once this occurs, a ring of slime forms around the worms’ bodies.