Arachnids never cease to amaze me.
I photographed this orb spiders web the other day with a strange adaptation.
The center of the web is inline with the wire, thus giving the spider some cover from the prying eyes of predators.
In case you might feel this has a degree of chance involved, the web is fixed to the wire only at the center point, with the rest of the intersection floating freely so as to catch prey.
This design would offer both protection and stability of the web.
An example of evolution at work through design adaptation.