A chimaera is a mythical creature from ancient Greek mythology, often depicted as a fire-breathing monster with the body parts of different animals. Typically, it is shown as having the head of a lion, the body of a goat, and a serpent for a tail. The chimaera symbolizes the blending of various elements into a single entity, representing chaos and the unknown. In modern science, the term "chimaera" also refers to a type of fish belonging to the subclass Holocephali. These fish, often called ghost sharks, have a cartilaginous structure and are known for their unique features, such as large, flat heads and long, slender bodies.