Epulopiscium fischelsoni: a bacterium found in the guts
of a fish in the Red Sea. It grows as large five hundred
micrometers, or as about the size of the period at the
end of this sentence.
Thiomargarita namibiensis (sulfur pearl of Namibia): spherical
bacteria with diameters ranging from 100 – 750m. They were
found in the ocean sediment off the Namibia coast. The name is
so-called due to the light reflection of sulfur inside the cells.