[quote=@MelonHead]
<Snipped quote by GreivousKhan>

Having a resistance to fire and to a lesser extent sound are realistic defences for an undead, water and ice are pretty much the shittiest abilities to use on your standard undead. You're already immune to drowning and you can hardly freeze to death, so I don't really understand what you mean by 'it did not block the kinetic energy' that's ultimately all water attacks are in the majority of fantasy. 
[/quote]

You lack imagination if you can't see how water reaching/breaching could mess up someone who uses a liquid to move and fight. 

Anyway, it was mostly to have a skull that continued the theme I was going for. Some one died in a fire? Check, some one who died by drowning? That's to obvious not to have.