Pyrococcus furiosus is described as one of the most heat-tolerant organisms known, with an optimal growth temperature of 100 degrees Celsius.
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In NAKTASHIF worlds:Marine and coastal habitats
Approved version OWNER-REVIEW-20261108T220844799 · last approved 9 November 2026
Pyrococcus furiosus also reduces elemental sulfur to hydrogen sulfide.
Pyrococcus furiosus has an anaerobic respiratory system consisting of a single enzyme, a membrane-bound hydrogenase.