A hyperthermophile's an organism that thrives in extremely hot environments— from 60 degrees C (140 degrees F) upwards. An optimal temperature for the existence of Hyperthermophiles's above 80°C (176°F). Hyperthermophiles are a subset of extremophiles, micro-organisms within the domain Archaea, although some bacteria are able to tolerate temperatures of around 100°C (212°F), too. Many hyperthermophiles are also able to withstand other environmental extremes such as high… (More on Hyperthermophile)