as far as I can recall, in the Arrival story ("the story of your life") the aliens eyes are a continous ring that has a 360 degree view. I also recall that the

as far as I can recall, in the Arrival story ("the story of your life") the aliens eyes are a continous ring that has a 360 degree view. I also recall that the aliens were impressed by humans standing in 'only' two legs. as their entire biology was radially symmetric. this is why their perception is so unlike ours.