Worms are also covered in short, bristly hairs called setae. While they are nearly invisible to the naked eye, you should be able to feel them if you try petting a worm the "right" and "wrong" way. You can also observe the setae by placing a clean worm on a slightly rough surface, such as a paper towel. read more
This movement by the circular muscles squeezes the front end forward. The other long muscles squeeze together and help move the rear end of the worm’s body towards the front end. So that’s how a worm can move forwards and backwards. read more
The world’s largest known living earthworm is found in Australia. A large one can measure more than a meter in length. read more
Start studying earthworms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. read more
The worms use some of their muscles and setae (bristles which cover their bodies). Setae act like the brakes on a car, helping to slow down or stop. Worms have muscles that go in circles around their body and other muscles that run the length of their body. Actually, they’re pretty well-built. read more