Sulfolobus acidocaldarius..This prokaryote survives under very extreme acidic and high temperature hence thermoacidophiles crenarchaea. Despite being primarily aquatic, one would expect the bacteria to grow on a moderate temperature condition and a neutral pH, but that is not the case (Rudolf, J., & University of St. Andrews. (2007). It grows at 80°C and a pH of 2. Additionally, they are often found in the hot springs. They also play a vital role in the sulfuric acid production process by oxidizing the sulfur to sulfuric acid. Why is it able to resist such extremes? Why do you find E-Coli-unique.