What is this thing? [Strange grid ball]

[Senegoid]

Grid Ball Unmasked At Last!

Funny this thread should pop up again today, just when we find this in a nearby thread:

@randwill

“25 of the most mind-blowing optical illusions ever posted on the Web”

http://now.msn.com/funny-optical-illusions

All of these photos are fun to study and I can figure out what is weird and why it looks weird for all of them except one. What are we seeing in the second (of 25) picture which looks like a globe of grass?

ZenBeam was quick to notice this, at Post #4:

@ZenBeam

Oh no, another grid ball!

No, maybe this is the Grid Ball!