Trope-a-Day: Alien Sea

Alien Sea: Obviously – not all oceans are water, y’know. Just look at Ólish, or Galiné, with their golden-black hydrocarbon seas. Or the molten metal lakes on Eurymir’s day face, or the reddish salty brine of terraformed Elémíre, or the literally wine-dark seas of rusty Talentar, or the colloidal algae-gelled oceans of Pentameir, or the copper-salt-blue waters of Daliethe, or…

…and that’s before we even consider non-terrestrial planets.