A coelom is a fluid-filled body cavity found in many animals, including those in the group known as coelomates. This cavity is located between the digestive tract and the outer body wall, providing space for the development and movement of internal organs. It also serves as a cushion, protecting these organs from shocks and impacts. The presence of a coelom allows for greater complexity in body structure and function. It enables the formation of specialized organs and systems, contributing to more efficient movement and digestion. Animals with a coelom include mollusks, arthropods, and chordates.