-filled volume found within the tissues of animals and often containing organs.

Body cavities are also known as coeloms and the organs that are found in coeloms can include the ( of the ), the (), the (, etc.

See also coelomate, pseudocoelomate, and acoelomate.

Note that body cavities are not to be confused with gastrovascular cavities which, technically, are not found within the body tissues but instead is located outside of the body tissues.