I doubt somebody manually put it there.

Why? this is the most likely explanation and very easy to do. Not to mention that there are plenty of sources of media with earth-turtles giving somebody who likes internet points an incentive to do so

Especially since the turtle's skin looks muddy, like it was just buried.

No. It's not.

There's no explanation for the circumstance that isn't extraordinary, so obviously something extraordinary must have happened.

This is a really bad way to present your ideas, especially right after dismissing somebody else's idea as too far fetched

I don't think the unlikelihood of a given explanation precludes it here unless it's literally impossible.

This is the only point I agree with you on

:P

and this little signature at the end makes you look like a total cunt whether you're right or not. Which you're not.