What archaea live in salty environments?
Halophiles are Archeae that can live in very salty environments, they are therefore considered 'extremophiles'. Some bacteria and eukaryotes can also be halophiles, but Archeae are the largest group.
They are found in environments where the salt concentration is at least five times the concentration of salt in the ocean. Based on how well they are able to resist salt (halotolerance) they can be divided into, slight, moderate and extreme categories.