Do you mean the astral 'smoke' that has a kind of swan/goose neck & beak with wings that seems to be embracing the right side of the disc and A'tuin Kelda?
You can see it more easily on this page HERE
as Great A'tuin is loading up. In fact the page background's full of vaguely recognisable shapes - can any of you see the sort of gorilla face right next to the left side of the rimfall at the top of the page?
And of course there's loads of little discs following A'tuin in the top right too