"Well, they look kind of like this. No, not the big gold things, those are synura and not the big clear thing in the middle either, that's an empty frustule of a diatom. No, we're talking about the small, balloon-looking thing hanging out on top of the diatom. So, what is that? It is a choanoflagellate, but you can call it a sibling. A very, very, very distant sibling of sorts, but a very important one."

Journey to the Microcosmos- Getting to Know Our Single-Celled Ancestors