Blue Moon

My first thought when I saw this image was about the possibility of life in sub-surface oceans on a few of the moons in our solar system (namely Europa and Enceladus). In reality these are jellyfish from Earth, but what if something like this exists in those oceans? Even something much more similar - like bacteria - would mean life is possible in many places.

But what if there is more? What if it isn't just simple little bacteria? What if it's jellyfish-like life, or even something more than that?

That would mean that fairly intelligent organisms are possible in many other solar systems.

That might mean that the universe is quite populated.