2D 'Side on' Water Ripple Effect

Hi all,

I'm making a simple 'bomb the submarines' type game, where you control a ship at the top of the screen, and have to drop depth charges on submarines below the water.

Does anyone have any suggestions on how I could produce that 'shimmering water' effect? It doesn't have to be something that gets too involved, but just something that stops the water looking so stagnant.

If I can find any examples of what I mean (picture-wise) I'll pop a link on here.

Ta,
M.

Maybe consider something like this? http://www.dgp.toronto.edu/people/stam/reality/Research/PeriodicCaustics/index.html

Cool, those are very interesting! Will see if they are suitable... :)