And it occurred to me that the animals are swimming

Around in the water in the oceans in our bodies

And another had been found, another ocean on the planet

Given that our blood is just like the Atlantic, and how

Well the universe is shaped exactly like the earth

If you go straight long enough you’ll end up where you were

Yea and I'd purely guess most worlds with life of some kind are on some sort of water planet, so you flee the 'scary oceans' at home to encounter alien ones of the same. If you can't adapt to the first real good luck on the second.

In fact, we have a massive liquid methane ocean right in our solar system, on Titan. And we don't know anything about what might be in it's depths