'That was when Iorek moved. Like a wave that has been building in strength over a thousand miles of ocean, and which makes littler stir in the deep water, but which when it reaches the shallows rears itself up high into the sky, terrifying the shore-dwellers, before crashing down on the land with irresistible power - so Iorek Byrnison rose up against Iofur, exploding upwards from his firm footing on dry rock and slashing with a ferocious left hand..[..]'