What are some examples of domain archaea?

is a diverse that includes Staphylothermus marinus, which is found in hydrothermal vents, Thermococcus litoralis (also found in hydrothermal vents), Methanopyrus kandleri , which is a hyperthermophile (survives in extremely hot places), and Cenarchaeum symbiosum , which lives only inside a certain of sponge.

To learn more about the domain, check out the wikipedia page, which is very extensive.