With a background in structure, I am drawn occasionally again to fractal designs -- especially when color is involved. Our first created ones were yellow dots on black background which took overnight to run (gone are the days of slow computers and Dos commands). Mathematical-digital drawing has been carried to such an extreme now that it is hard to see the natural self-similarity of the designs and I am not convinced that many are true fractals; but I donot pretend to grasp all of the edges of this stuff.
This presentation is a nice history with current developments
It is thought that organic development of natural live structures: trees, branches, leaves and roots ; and the geologic structures: craggy mountains, seashore outlines from above, and lakeshores moved by wave action,
may be influenced by the fractal development, which is the larger is just a reproduction of the smaller, grown.
Here is a better example. This is s a closeup of some kind of mold development. Ugh, probably looks better smaller.!
Another rendering:
