Spiracles are small openings found on the bodies of certain animals, particularly in insects and some aquatic organisms. They serve as entry points for air, allowing these creatures to breathe. In insects, spiracles are typically located along the sides of the abdomen and connect to a network of tubes called tracheae, which transport oxygen directly to tissues. In fish, spiracles are modified gill openings that help with respiration, especially when the fish is resting on the ocean floor. These structures can also assist in filtering water, ensuring that the animal gets enough oxygen while minimizing the intake of debris.