Insects are marvels of engineeting
Geege Schuman stashed this in Insects
"We've found examples of springs, made of layers of hard insect cuticle and of a fluorescent blue protein called 'resilin'. This layering of the two materials gives the springs similar properties as modern composite bows."
And just like composite bows, this stores much more energy for the length of the bow - across the stretched outer layer and compressed inner layer.
Did we learn about springs from insects or do they just happen to have springs too?