What is biofilm?
Biofilm is a slimy bacterial mico-organism that sticks to a living or non-living surface.
Dental plaque on animal or human teeth is biofilm.
Biofilm can be a single species or a group of micro-organism that form a biological system, like a community.
Biofilm can be found everywhere, all over the globe, even in extreme climates, such as glaciers. Mostly, it is foud on rocks and pebbles on the bottom of stagnant and still rivers and streams.
Fish and aquatic animals love to eat biofilm.