As promised, the fractal's transforms only include bubble/and or sinusoidal variations, and I used both. No final transform.
There's a little background story about this: as you could have guessed from the title this fractal became, to me, a way to represent the ozone layer's state. You noticed the huge hole down the sphere, right? It's the effect of ozone depletion, of course - one of the plagues of our century. The little spheres inside it are a symbol for the core of the Earth as well. Hope you'll like it, since I do!
Postwork: a little adjusting with GIMP to make colours more bright and vivid, just like the previous fractal.