Halophiles, oo ay ku jiraan nooca Halobacterium, waxay ku nool yihiin jawi aad u cusbo badan sida harooyinka cusbada leh waxayna ka badan yihiin dhigooda bakteeriyada ee cusbada ka weyn 20-25%. Thermophiles waxay ku koraan heerkulka ka sarreeya 45 ° C (113 ° F), meelaha sida ilaha kulul; Hyperthermophilic archaea waxay ku koraan heerkulka ka sarreeya 80 ° C (176 ° F). Archaeal Methanopyrus kandleriin 116 xitaa wuu ku tarmi karaa 122 ° C (252 ° F), heerkulka ugu sarreeya ee la diiwaan geliyey ee noolaha kasta. Archaea kale waxay ku nool yihiin xaalado aad u aashito ama alkaline ah. Tusaale ahaan, mid ka mid ah archaea-yada ugu daran ee aashitada leh waa Picrophilus torridus, oo ku nool pH 0, taas oo ah 1.2 moota sulfuric acid oo ku dhex jira badaha.
122 °C