Comparative morphology isn't taught much these days, so the chances are that you won't have met many of them. So I shall try to give you an idea of just some of the different animal types that are around, and their basic bodyplans. But apart from this the other 34 phyla have been represented in fossil deposits and as living animals for 500 million years. The odds are that fossil remains of animals like this will be discovered in Cambrian deposits too, now that we know what we are looking for. Lets just sample these top ten, all of which have over 1,000 different species, to give us some idea of animal diversity.
Water is admitted via the pores and leaves via the excurrent vent.
The vase is covered by flattened covering cells which fit together like tiles in a mosaic, forming an epithelium. The large internal cavity is lined by collar cells each with a flagellum. These create a current which passes out via the vent. Large particles are excluded by the incurrent pore size, but small detritus which includes food sticks to the collars and is ingested. They are even sometimes colonial.