Two things, I have no clue why you'd be stuck out there. As far as I know you should be able to move on water (try to move your character in different directions).
2nd, if you ever want to post a picture again, go to the website, but you need to right click on the picture, and go to "view image info" (in firefox) or in internet explorer right click the picture and choose properties and then inside there is the location (address) of the picture.
