Swimming Physics

[Anthony]

Is there a way that you can add on a swimming physic to the player so it can swim underwater have the effects like being underwater and the breath time on how much time you have underwater using the player controls and make it him flow underwater using the mouse to look around w for Forward A for left D for right and S for backwards and when you're underwater for a long period of time you drowned and died is it possible to do. I also like the water that you have in your template it looks more realistic then I ever seen this is my first post and hopefully I have brought up a nice idea .

All the best
Anthony