Life on a Grain of Sand
This is a Scanning Electron Microscope (SEM) image of a natural community of bacteria growing on a single grain of sand that was collected from intertidal sediment on a beach near Boston, MA.
You are free to distribute these images while giving attribution in the following manner:
"Image courtesy of the Lewis Lab at Northeastern University. Image created by Anthony D'Onofrio, William H. Fowle, Eric J. Stewart and Kim Lewis."