https://www.wired.com/story/biggest-threat-to-humanity-black-goo/amp
It's not like the ET entity in The_Thing_(1982_film), but just as dangerous.
http://www.alien-covenant.com/topic/43391 , https://www.alien-covenant.com/topic/42087
https://en.wikipedia.org/wiki/Creepshow_2#The_Raft , https://www.youtube.com/watch?v=Gyb8Ko-wOLE