I am sorry but I forgot the professional termina for soil life, but i was looking for Instituions that exhibit species that live on and in substrate.
I personaly have not come across such an idea yet, except one time at the old monkey house at artis zoo in amsterdam that had substrate filled from the bottom of glass windows to a height of I d estimate half a meter.
The official inhabitants were Mandrills but there were some isopods and ants in the substrate.
The monkeys sort of digged thru the upper layer and but seemed to be able to recognize that view of a visitor implied se critter d be around that area and so they digged even deeper if the out look seemed promising.
I am talking less about mole rats and other bigger mostly vertebrates.
Rather earth worms and other micro species.
I personaly have not come across such an idea yet, except one time at the old monkey house at artis zoo in amsterdam that had substrate filled from the bottom of glass windows to a height of I d estimate half a meter.
The official inhabitants were Mandrills but there were some isopods and ants in the substrate.
The monkeys sort of digged thru the upper layer and but seemed to be able to recognize that view of a visitor implied se critter d be around that area and so they digged even deeper if the out look seemed promising.
I am talking less about mole rats and other bigger mostly vertebrates.
Rather earth worms and other micro species.