Spiracles - GCSE Biology Definition

Spiracles are small openings found on the bodies of some animals, such as insects and certain fish, that allow for gas exchange. In insects like bees and ants, spiracles are located along the sides of the body and lead to a system of tubes called tracheae, which transport oxygen directly to the cells and remove carbon dioxide. In some fish, such as rays and sharks, spiracles are used to draw water into the gills, especially when the animal is resting on the sea floor. Spiracles are an essential part of the respiratory system for these animals, allowing them to exchange gases and survive in their habitats.