Why Holes at the Bottom of the Ocean Disappear and Reappear
What lurks below doesn’t always stay beneath the sand.
There is a discussion on Hacker News, but feel free to comment here as well.
Obviously it's because at first there's just a hole. But before long there’s a smile on the flea on the fly on the wart on the frog on the bump on the log in the hole in the bottom of the sea.