So I'm redoing my map starting with plate tectonics. While looking at the plate tectonics of earth I'm having difficulty understanding how exactly the plate move in relation to the north and south poles. Looking at the tectonic map of earth Flash Presentation it seems there are two plates at the north pole. However I am uncertain if there are two or one, due to earth being a sphere it would seem that it is one. If there is just one does that mean that the plate rotates around the polar axis with a possible slight drifting in one direction? looking at the south pole it seems that the Antarctic plate is actually rotating around the south pole axis.

Any thoughts?

Thanks Ascanius