In case you're bothered ....
That was a genuine Devonian Age quartzite cobble in the air. They do come up for air occasionally. However, no stones or creeks were hurt in the making of this website. Also, his eminence is alive and well and says to say "Woof," to one and all. That is Fish, who is a three-legged white dingo. Part of his job is to check the creek to see if the water fits right to the edges, and for bunyips and such.
If you were an old-time aborigine from hereabouts or points south, the fact that a white dingo on bunyip patrol should vanish into thin air would not raise an eyebrow. The fact that a white dingo was on bunyip patrol, would have been banner headlines.
What bothers you, depends on your culture. It's not just the science that's in question.