Some of the most interesting organisms can be found in these sort of extreme environments.
Not really related to the article, but I'm really fond of this one, found in salt pools, for its beautiful and unique morphology: https://en.wikipedia.org/wiki/Haloquadratum
That says it was discovered by "A.E. Walsby" who passed away in 2024. It also says this is his self portrait
https://en.wikipedia.org/wiki/A.E._Walsby#/media/File:Haloqu...
Something seems a bit off about that self portrait.
That does not look like him! :D
There are a lot of interesting organisms. Some eats away plastic, some grows back their limbs, and so on. I am pretty sure people are doing researches on them, as we would like to have that kind of regenerative power. I do not have a better list now, but I have ran across a lot more, interesting ones.