A microbe that lives in Water and near hydrothermal vents at the bottom of the ocean is the only living thing on Earth to survive up to temperatures above 121 degrees Celsius (250 degrees Fahrenheit).
Reference: Genomic Standards Consortium
Known as Strain 121 this living microbe, broke the previously known record of 113 C (235 F) by another hyperthermophilic (or extreme-heat-liking) microbe called Pyrolobus fumarii.