jtotheizzoe:

Dragonfly Flight

Unlike rigid man-made wings, insect wings do not rely on air moving over a curved surface to provide lift. In this high-speed video you can see that as the dragonfly flaps its wings, tiny vortices swirl from the edges of the wings. These provide the lift that keeps the insect aloft.

(Video by NACImageTechnology)

My favorite insect. :D