except vertebrates.

obviously porifera and cnidaria have sponges and coral. arthropoda has barnacles. mollusca has clams and such. there are vertebrate filter feeders like flamingos and blue whales but they are all mobile.

folks I think this is our chance. this is our hole. we gonna go into the sea, attach to the substrate, and suck in low quality nutrition straight from the water column. this is what the vibe will next shift into.