@stc
gm with some beautiful sea-shell pattern studies for #monochrome-monday #mono
Typical examples of pigmentation patterns on mollusc shells. In each close-up the pattern grows from top to bottom, just like in a one-dimensional cellular automaton. Patterns with triangles are often said to have a "tent" or "divaricate" form. The shell on the bottom right is a slightly rare specimen where something close to an explicit nested pattern can be seen.
Found these in the great book 'New Kind of Science' online >> https://www.wolframscience.com/nks/p423--biological-pigmentation-patterns--ebookview/