I recently finished watching one of the Star Wars films, the one that features the sarlaac pit. When I saw it, I began to immediately think how such a thing would evolve.
The sarlaac pit is essentially a carnivorous living pit that firsts begins its life as what we could define as spores, in which will burrow themselves deep in the earth and never move from that spot, subsiding only on the creatures that unfortunately fall into its mouth. When the unfortunate creature falls into the sarlaac pit, it’ll be injected with a neurotoxin that causes constant pain and be digested over a period of millennia.
To be clear when I ask my question, I’m not going to be asking about how the sarlaac pit could possibly evolve or exist, and I used it as just pure reference, and another great reference could be the ant lion.
what conditions would allow for a COMPLETELY immobile carnivore to evolve
If a completely immobile carnivore species isn’t possible, then could you explain how a carnivorous species with the least mobility evolve