You might find these videos interesting. Pattern formation by motile E. coli. http://www.rowland.harvard.edu/labs/bacteria/movies/showmovie.php?mov=plate_patt

You might find these videos interesting. Pattern formation by motile E. coli. http://www.rowland.harvard.edu/labs/bacteria/movies/showmovie.php?mov=plate_pattern_3 http://www.rowland.harvard.edu/labs/bacteria/movies/showmovi... edit: here's a reference https://pubmed.ncbi.nlm.nih.gov/7596432/ https://pubmed.ncbi.nlm.nih.gov/7596432/ Berg died about 10 months ago.