How do I model creases and organic shapes in rhino and grasshopper?

[scottd (Scott Davidson)]

I might start here: What math behind such seashells?

And also look at the Pufferfish plug-in from @Michael_Pryor - https://parametrichouse.com/pufferfish/

And this publication may help: https://issuu.com/emilylucchesi/docs/algorithmic_sketchbook