World bosses have become a stable for GW2, but it can sometimes lack variety. I think that an aquatic world boss would be amazing, the underwater combat system would get much more use, the increased movement from the 3d plane would allow for new strategies and new more creative environmental weapons and boss attacks, and the concept of an aquatic boss would take the idea of finding a safe spot and stacking there and put it on it’s head.
Not to mention “Bubbles” has to come out to play sooner or later, so why not get some people craving large scale aquatic fights now?