For those of you wanting to know some Thalassian for IC purposes, I present to you the following:
http://www.worldofwarcraft.com/info/encyclopedia/576.xml
http://www.wowwiki.com/Thalassian
http://thalassianlanguage.blogspot.com/2008/03/diel-travel-into-thalassia-language.html
Note that there's not an official translation for the word 'wrath' -- not yet, anyway. For our purposes, using this common battlecry for the Sin'dorei (Anar'alah Belore) works, especially since the phrase could have more than one translation.