Re: How they do that?
If you watch the professional ones, even individual water droplets are suspended in the same position in mid air through all the pictures. You can't do that with one camera. That's what makes those shots so interesting. In fact, if you look, they use very fast cameras (or film)and the flash is obvious on the subject from all the angles, meaning multiple simultainious flashes. (The subject is obviouly lit brighter than any other part of the picture).
This is one case where low-tech trumps high-tech.