Unused Swimming Animation

In first person, only the arms and held item are rendered. The rest of the body doesn’t exist. The hands are probably a different rig, meaning a third person animation can’t just be pasted onto the hands.

You wouldn’t want that anyway - the gun would flail around and be off screen most of the time. First person animations are tailored to the camera, so you can see what you’re holding as you look up and down and aim down the sights and all that. Moving to a third person camera while swimming would be more feasible, but… changing away from a first person camera just because the animations look nice seems unlikely to happen. The third person camera is just a debugging option. It’s not necessarily dialed in for moving and aiming as well as the first person camera is.