The hydrodynamics of water strider locomotion. ”Dipolar vortices in the wake of the adult water strider. Images captured from a side view indicate their hemispherical form. The ambient texture results from Marangoni convection in the suspending ﬂuid prompted by thymol blue on its surface. The starburst pattern results from the chunk of thymol blue evident at its centre reducing the local surface tension, thus driving surface divergence that sweeps away the dyed surface layer. The ﬂuid is illuminated from below; consequently, the light-seeking water strider is drawn to the starbursts.” John Bush.
The Flying Snake, Chrysopelea.
While ‘flying’ snake may be a misnomer, these snakes can glide for longer than the length of a football field. They do so by ‘inverting’ the undersides of their bodies into a concave shape, causing air to be trapped beneath it allowing them to slither through the air, changing both their velocity and direction at will.