(responding with tutorial from talk in-game)
Sadly I couldn't find a water mesh like that or anything similar to it, but, you can make your own water material. ^^ Remember, for the ice texture, you want it to be seamless, so when you're looking for one, make sure it's seamless or it'll look strange!
Source: http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=8323.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=8323.0)
(http://i155.photobucket.com/albums/s308/ringoluver/customwatertut1.png)
(http://i155.photobucket.com/albums/s308/ringoluver/customwatertut2.png)
(http://i155.photobucket.com/albums/s308/ringoluver/customwatertut3.png)
(http://i155.photobucket.com/albums/s308/ringoluver/customwatertut4.png)
Feel free to post here or PM me if you have any further questions :3