A male and a female dragonfly will mate while they are flying in the air. After two dragonflies mate, the female dragonfly will lay her eggs on a plant in the water, or if she can’t find a suitable plant she will just drop them into the water. - See more at: http://www.dragonfly-site.com/dragonfly-life-cycle.html#sthash.nj0l5Sf8.dpuf