cells live within the detrital material (in this case a bacterial floc) in the Lake. This particular sample was taken from a sponge that had been suspended in the lake to allow it to become colonized by microbes. The diatom species in Mono Lake have been described in - Kociolek, JP and Herbst, DB. 1992. Taxonomy and distribution of benthic diatoms from Mono Lake, California. Tansactions of the American microscopical Society, 111: 338-255. Differential interference contrast optics.