Includes almost 900 taxa that are found in Priest Pot, nearly all of which are less than 1mm in length and dominated by some 628 Protists, including 256 species of ciliates; 94 bacteria and 86 viruses are noted. Higher organisms include five fishes and 28 angiosperm macrophytes, but the main text focuses on the wide variety of microbes that have been studied so far.