Only tested with Dwarf but you can probably do it on other races.
Go into any water where there's a shore of sorts. Swim all the way up.
Once you do that swim towards the shore but DO NOT press space.
Uploading a video now.
Edit: Video is processing on YouTube - http://www.youtube.com/watch?v=SX_DSBJiabE
If anyone is able you could probably use this somewhere like Ulduar at Ignis the Furnace Master's room.