http://forums.bukkit.org/threads/me...helmets-to-stay-underwater-1938-1-1-r4.21270/ With this plugin you could have the ability to breath underwater when wearing a pumpkin/helmet (you need permissions for every single helmet/pumpkin). This would allow people who want to build underwater towns (I have seen 3 people) and some of them give up because its impossible to build underwater without dying all the time, this is an absolute waste of a good town and this will fix that issue. I suggest this feature being a $10 donator feature (we have too little of those)
Can't you get some underwater breathing helmets in the vanilla minecraft and just use doors/reeds to keep your air?
I hope this is fixed too. I was planing on buying something else, but Ill wait couple more days (about week) in case this is fixed and added.