I've got a nice water graphic, with the wave effect applied.
I'd like to have fish jumping out. For this to look good, they'd need to look like they were coming out from behind the water that's between them and the viewer - in other words the image would need to be clipped by the waves.
If I create another wave graphic, then they could only come out of that one horizontal point.
How do I make fish look like they're coming out of the water?
In other words, from this graphic:
<img src="https://dl.dropboxusercontent.com/u/17914213/fish.png" border="0" />
I want to do this (notice the clipping on the lower part):
<img src="https://dl.dropboxusercontent.com/u/17914213/fish_out_of_water.png" border="0" />