Mankind has learned many things, quite many the things 'made' by man's hands, from observing the world around them.
Rappelling; maybe from watching a spider let out silk to slow its descent.
Flying; watching birds glide in flight.
Scuba diving gear; fins resembling those of a seal.
Auto mechanized robot; the legs of an animal, like a deer.
Velcro; burdock burrs (arctium).
Riblets on surfaces to reduce drag; shark skin.
Check out some nature inspired inventions.
There is much more man can learn when observing nature, its order, symbiotic relationships and how some animals depend on others for existence.