Photo shop. Not a very good one at that.
Not a photoshop, in the video, you can see it move, it’s a brown bear with a big salmon in its mouth. The ‘trunk’ is obviously silver/gray, it is no doubt a bear.
I agree it’s clearly a photo shop. The river water isn’t splashing up against the legs of the elephant for one and even though the video is blurry which is odd for today’s phones/cameras, at the point of contact with water it’s even blurrier.
My first thought was it’s a fake and the more I watch it the more I’m convinced my first thought was correct.