By Unknown
animals
Via Grist
The fact that this sea creature looks exactly like a rock with guts is not even the weirdest thing about it. It's also completely immobile like a rock — it eats by sucking in water and filtering out microorganisms — and its clear blood mysteriously secretes a rare mineral called vanadium.
Ever want flash cards that showed you what sort of poop animals create? Now you can have them!
