Greetings, people of OA

[Rho Ophiuchi]

http://www.bbc.com/earth/story/20160209-...ilin-water

the hottest temperatures we -know- organic, water-soluble life can exist in would be right below boiling temperature 100 C




as for in Orions arm,
there's probably some extremophile clades or tweaks which aren't described yet in detail AFAIK- though clades adapted to a vacuum environment can probably withstand higher temperatures 

To'ul'h has a lot of organisms that we'd consider extremophiles living in a high temperature environment as well
https://www.orionsarm.com/eg-article/48f71d38d2c56

Hello Dfleymmes1134,

Thank you for the links - I am basically imagining a planet (colonized by terragens) with a smooth transition between the atmosphere and ocean, above water's critical point. As that is way higher than the article you mentioned (I am thinking around 400 C as a surface temperature, on a planet about half supercritical water by mass), could a cyborg clade work?

Sincerely,
Rho Ophiuchi