If you want an Angel with a sort of ocean motif, the closest I could recommend (from MTG, at least.) is called Aegis Angel.

To be frank, the art for most Angels in MTG is fantastic, and if you find yourself bored, I recommend [url=http://gatherer.wizards.com/Pages/Search/Default.aspx?page=0&name=+%5BAngel%5D]taking a look[/url] (The site is a bit unruly, you can cycle through the five pages at the top right corner)

[Hider=Aegis Angel][Img=http://media.wizards.com/images/magic/daily/sf/kdertyyghjkfsdoitg645ertwe87uoirfposuuhs.jpg][/Hider]