If this bubble looks like a bathysphere, that's what it is, but there are some counterintuitive topologies at work here. Actually we, and the rest of our world, are inside it... though the spheresurface seems to enclose something inside it, actually that apparently tiny spheresurface covers and protects our entire world from the terrible pressures of the much larger atmosphere and worlds that lie behind it. The scientists who made it knew this.
So that I would understand, the bees showed me a little movie called "The Garden of Eden Cave", starring me, Jacob Maker, as Fat Boy, the world's first, and loneliest, plutonium bomb.