I just realized that they are all using an oversized version of the “baby” model (the rotund one lacking a prominently tail making them more frog-like and cartoonish in appearance) rather than the “adult” model (the more realistic one looking much more like a proper cross between a beluga whale/manatee) with a unique orca texture.
Is this just an oversight by the devs, or perhaps indicative of the Arctic variety spending their adult lives further out at sea while the juveniles stay closer to the shore?
Or perhaps they mature slower and remain in their juvenile form for longer, even past the point where they are considered adults?
Edit: I actually found some fan art highlighting this:
On the left is the “baby” model all Orca/Arctic Quaggans use in-game and on the right is how the hypothetical “adult” one should possibly look.
Please Anet give us a hide Chest Armour-option. Tattoo-clad Norns everywhere beg of you.