The Hydrogenothermaceae family are bacteria that live in harsh environmental settings.

They have been found in hot springs, sulfur pools, and thermal ocean vents.

An example occurrence of certain extremophiles in this family are organisms of the genus Sulfurihydrogenibium that are capable of surviving in extremely hot environments such as Hverigerdi, Iceland.

[1] Hydrogenothermaceae families consist of aerobic or microaerophilic bacteria, which generally obtain energy by oxidation of hydrogen or reduced sulfur compounds by molecular oxygen.

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LSPN)[2] and the National Center for Biotechnology Information (NCBI).