Game Mechanics: Deepwater Goblin (Lake Rathetear)

[Boilon]

I am killing a deepwater goblin in Lake Rathetear and despite rooting them underwater they are hitting me from a mile away even though their model is nowhere near me. This has happened on all of the 3 spawn deepwater goblins that appear in the tower for Lord Begurgle and Tainted aquagoblin.

edit: Upon further examination, this only occurs when there is line of sight between the mob and the player. I had the goblin rooted outside the tower and it could hit me anywhere within the cave, but when I hit out of LoS I stopped being hit.

I am wondering if this is the case for all underwater mobs, or if it is specific to these.