Bacteroidetes
The phylum Bacteroidetes is a large, diverse group of bacteria composed of three large classes that are found across every habitat on Earth including in soil, in sediments, sea water and in the guts and on the skin of animals. The group is composed of around 7000 sub-groups split into six catagories: Bacteroidia, Chitinophagia, Flavobacteria, Sphingobacteria, Saprospiria and Cytophagia.