Barnacles are Thargoid poop!
Think about it, what you guys are hunting and scooping up is the digestion product of an Alien Race that was once left on another Planet.
After a while, another Race comes along admiring these pilars and wondering how they got created.
The Freelance Report "Pleased to eat you" makes my theory even more funny than it was already
Do not slander Thargoids on the 8th of Mars. Women of all species deserve our respect on this day.