A wave curls with the same shape as does the tail of a comet Subatomic particles curl in magnetic fields with the same shape. We find the same shape in the curl of the horns of animals, the curve of the roots of teeth, the curl of a spider web, or of the antenna of insects. The Fibbonaci curl is seen in the tuber of plants, in the arrangement of seed in sunflowers, or the shape of pine cones. We see the same curl in sea shells, in the inner ear of a human, in the internal structures of all brain tissue, in the inside structure of algae. It is important to notice that this curl is not confined to biological systems or to astronomical systems.
Numerous examples abound in every discipline of science one can imagine.
You can also not argue that it offers any advantage. The Fibbonaci curl is not a form that increases strength. Hexagonal structures and triangular structures are much stronger than any Fibbonaci curl. Having a Fibbonaci curl does not offer some kind of evolutionary advantage that natural selection can work on to perpetuate the form especially when we are talking about systems that are not biological in nature. You are an expert in something that reflects your appreciation of the creative ability of mankind.