How is the movement of an earthworm similar to peristaltic movements of intestines?

The movement of an earthworm is similar to the peristaltic movements of intestines in that both involve coordinated contractions of muscles to facilitate movement through a tubular structure. In earthworms, circular and longitudinal muscles contract and relax in sequence, enabling them to elongate and shorten their bodies for propulsion through soil. Similarly, peristalsis in the intestines involves rhythmic contractions that push food along the digestive tract. Both processes rely on smooth muscle coordination to create a wave-like motion for movement.