Bacteria and Fungi in cavities can cluster and display emergent behaviors

https://penntoday.upenn.edu/news/microbes-cause-cavities-can-form-superorganisms-able-crawl-and-spread-teeth

““This discovery of a ‘bad guy’ superorganism is really ground-breaking and unanticipated,” says Knut Drescher of the University of Basel, a co-corresponding author on the paper. “No one would have predicted this. Zhi accidentally stumbled across this by keeping an open mind.””