Microscopical and environmental images about the microbial world around us. Lakes may turn pink for a variety of causes, but this inland lake near Underbool (Victoria, Australia) is the result of vast numbers of pink (also called purple) sulphur bacteria. This is an area that Jakoba Ruinen studied almost a century ago, reporting beautifully on the flagellates. Bodo underboolensis, a heterotrophic flagellate from this locale shows up in Algaebase as an alga and in WoRMS as a marine species, was one of hers.
The menu links to some images that help to communicate the diversity and characteristics of the microbial world. The majority are of living organisms taken with a light-microscope so that details can be seen. Mostly the organisms are one-celled. Various lighting techniques have added contrast and strength to the images. Larger versions of these and other images are available on request.