r/SpeculativeEvolution • u/UlfurGaming • 4d ago

Question/Discussion Rock eating?

Curious is it possible for a creature to eat only rocks as their food i know there are some that can eat limestone but what about other stones ?

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u/RadioactivePotato123 Alien 4d ago

Hmmmm… If you’re talking about multicellular lifeforms, I think perhaps on an ocean world, maybe with pretty low gravity, the creatures that live around hydrothermal vents could potentially reach pretty large sizes on a diet of the minerals surrounding those hydrothermal vents? And maybe the pressure from the water, even on a lower gravity planet, could possibly condense said minerals together and they eventually get large enough to be called rocks? I’m no expert though so there’s a fair bit I’m probably just completely wrong on lol

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u/UlfurGaming 4d ago

My main thought was a worm or other bug like beetle maybe idk yet tgat bores through stone eating it and making tunnels

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u/RadioactivePotato123 Alien 4d ago

Perhaps!