Too less settings for underwater mist

Hi b4w developers!
As you may remember I'm developing a 3D underwater interface for my thesis project. I have tried to achieve a nice underwater effect without affecting the visibility of underwater objects but I've failed so far.
I'm currently obtaining results like:

or

But I would to have something like this:

Is there a way to do this using underwater mist or I should remove water object and proceed in another direction?
Thanks in advice!

Is there a way to do this using underwater mist or I should remove water object and proceed in another direction?

If you don't need to show a water surface you can use simple blender mist because it's more customizable than water fog. If you need to add water causic you can add it into the sand matierial using an animated texture.