Broken on dedi as well as in editor.
http://www.youtube.com/watch?v=tI0Y1KKFAFM
If you walk into water the player does not immediately switches to swim mode, Then when he does you can only control direction, and player autoswim in slo mo. If you direct player to the shore it will swim on dry land.
Also I noticed a fish swimming over a rock too, so it must be global issue.
In some of the tries player got stack in endless weapon removing putting back animation loop under the water.