The gills of insects
Some insects have evolved an aquatic lifestyle—many, including
damselflies, start as underwater nymphs, and their tracheae branch finely in flaps on their body that work as gills. Adult damselflies breathe by drawing air into special breathing tubes in their bodies. These tubes are called spiracles. Larvae breathe through three long leaf-like gills at the end of their body. They use these gills to get oxygen from the water in which they live. Three gill filaments attached, like a tail, to the rear of the abdomen.
