Mosses Outside My Apartment

I was sitting in the park next to my apartment building a few days ago and took these photos.

What do you think?

1) The mosses grew like this on the fence bar.
2) They jumped up there to get a better look at the river.
3) People have fun arranging mosses in the park.

I vote for #3. I thought that it was pretty fun to think that someone arranged the mosses in a very decorative manner. But I wonder how many people have seen them and thought that they just grow on the fence like that naturally. I have seen mosses growing on a number of man-made items. However these ones have huge chunks of sand sticking to the bottom of each clump, which makes me think that they were relocated.

I will definitely be on the lookout for more moss relocation "art" in town.