Space whales?!
@FireMonkey Many fictional space settings have them. Kind of surprised it took Star Wars as long as it did.
@00pi
I'm afraid I've missed them in my sci-fi readings.
@FireMonkey I am not too familiar with animated Star Wars, but it is my understanding that those whales made their debut there, and exo-life had a precedent with the asteroid monster in Episode V. Star Trek had them on Discovery. Farscape takes place on one. Doctor Who had cities built on them. It's a recurring trope, appearing in video games, on screen, in writing.
@FireMonkey My definition of space whale may be a bit overly broad, but "Leviathan" certainly seems to be meant to evoke whales in Farscape. In Trek:
https://memory-alpha.fandom.com/wiki/Gormagander
and arguably
https://memory-alpha.fandom.com/wiki/Gomtuu
In Who:
https://tardis.fandom.com/wiki/Star_whale_(The_Beast_Below)