Guild Wars 2

So, going through the personal story for the second time and i’m playing retribution. I get to the part where you fight the plague bringer, and I hit him once and walk off since I have so many allies they can just do it themselves. I went back to the docks and noticed that, in the water, there is a Champion Risen Megaldolon (the shark) just swimming out in the waters.. Even with a bunch of npcs following me, it wiped us within a few seconds. Any reason they have a random champion shark just swimming around out there? It isn’t necessary to complete the quest.

To keep you on the right track
It seems Anet put a lot of those sharks in PS, someone else encountered one in one of them dealing with ships in Orr

Oh yeah, in CoF, near the final boss for story mode if you go the wrong way and enter the water, or if you go in the water around the boss you’ll find an amassment of champion sharks.