This above video is the result of a test to see if I could fake super slow motion water splashes using After Effects' puppet warp tool. Simply put, this tool lets you animate parts of your image while you tell it which areas need to stay in place in order for things to look natural.
In order for the motion of the splashes to look natural, and not look like part of them was attached to the model, I first needed to isolate them from the rest of the image. I did this by masking out the model, and cloning in some more water that would have been hidden from view in the original image. The point was to make it look like the splashes are slowly coming into view from behind the model and are expanding at the same time. Below you can see the original image and the isolated splashes.
The individual splashes were then brought into After Effects to be animated. The puppet warp tool overlays a mesh on the area you want to animate, that you can stretch and warp as you please. It's important to keep in mind what the motion would look like if this were a real slow motion shot, in order for the result to look realistic. Below you can see the mesh for one of the splashes, as well as the first and last frame of the total shot (click for larger images). In the end, the result was pretty convincing relative to how quickly this was put together. The splashes in front of the model are obviously static, which ruins the illusion a bit, but this was just meant to be a quick proof of concept.