It's probably easier to list the invertebrates that aren't commonly called bugs than those that are. Squid, octopus and jellyfish get a pass. The immobile o

It's probably easier to list the invertebrates that aren't commonly called bugs than those that are. Squid, octopus and jellyfish get a pass. The immobile ones like corals and sponges as well, but I think that's about it.