| Examples | Phylum |
| Sponges | |
| Jellyfish, hydras, corals | |
| Planarians, tapeworms, flukes | |
| Hookworms, pinworms | |
| Squid, snails, bivalves | |
| Earthworms, bristleworms | |
| Lobsters, scorpions, ants, centipedes | |
| Starfish, brittlestars | |
| Tunicates, fish, ambhibians, reptiles, birds, mammals | |
|