 Undulatory locomotion

Undulatory locomotion is a type of movement found in some animals, particularly in certain aquatic and some terrestrial species. In this form of locomotion, the body moves in a wave-like pattern, effectively creating undulations that propel the animal forward. This method is commonly observed in various organisms, including: 1. **Fish**: Many fish, such as sharks and eels, move by contracting and relaxing their muscles in a wave-like manner along their bodies, allowing them to swim efficiently through water.