The ascidian sea squirt grows with the individual clones (zooids) of which it is composed connected with each other. In one species that shares the same blood, there is the phenomenon in which the entire colony acts as one and all the individual zooids undergo a change of generations at once. On the other hand, if an individual zooid can be skillfully separated from the rest it can also survive on its own. When we speak of a single sea squirt are we referring to a single clone or the colony it makes up along with many others?