Some interesting images. I do not think that any are faked.Like many things today we have deskilled the task with modern equipment which I feel does detract from their value. 

Digital slr's, especially the pro type used by some sports and wildlife photographers shoot 8 frames, or more, a second with ease.   It is common to simply machine gun a scene for a few secs. and select the best image, not much skill in timing there.
 
For an example of skill in timing I prefer this:

http://www.magnumphotos.com/Archive/C.aspx?VP=Mod_ViewBox.ViewBoxZoom_VPage&VBID=2K1HZO6E7IK8W&IT=ImageZoom01&PN=5&STM=T&DTTM=Image&SP=Album&IID=2S5RYDI9CNRQ&SAKL=T&SGBT=T&DT=Image

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html