Talk about dragonfly water

Dragonflies lay eggs when they touch water, and the eggs are laid directly in water or aquatic plants. Larvae hatched from eggs are called hydra. Hydra often sticks out its hooked lower lip to catch small animals in the water for a living. Hydra is an expert in swimming. It adopts jet type. As long as you compress your abdomen and spray water backwards, your body will naturally rush forward at a very high speed. Breathe through the rectum, trachea and gills. When Hydra grows up, it climbs the branches or stones protruding from the water and becomes an adult dragonfly like a dragon.