This art is made of film degraded by bacteria.
It’s a self-portrait of the artist Erno-Eric Raitanen. The bacteria was harvested from his own body and cultivated on the gelatin surface of photographic film.
It’s a similar process to growing bacteria on a plate of agar. As the bacteria gnaw away at the gelatin, the film starts to degrade and creates some interesting patterns. He calls them bacteriograms.
I recommend you flick through his online gallery. I like to think I could make some myself one day, except with added science. Maybe add some antibacterials to part of the film and influence the pattern. OR add a mild antibacterial to the whole surface and make a picture of antibiotic-resistant bacteria!
I know I’ve got some scientist readers out there who are into bacteria. What would you make a bacteriogram of? What about virologists, how could you get some viral action happening on film?