This digitally-colorized scanning electron micrograph (SEM) of an untreated water specimen extracted from a wild stream mainly used to control flooding during inclement weather, revealed the presence of unidentified organisms, which included bacteria, protozoa, and algae. In this particular image, a filamentous chain of what appears to be a specie of green aglae known as Bulbochaete
. Note what appeared to be one of this species characteristic hair cells on the right. The wrinkled appearance of this specimen may have been artifactual, brought on by having been processed prior to its examination under the electron microscope.