 I learned along the way that we know that Neanderthals can swim. And the reason that we know that Neanderthals can swim is because if we look at the skulls of lots of them, we can see that they've got the same bony growth in their ears that humans get, you know, surface ears. So if you get swimmer's ear or surface ear, those kind of growths in your ear, they have the same growth in Neanderthals. And also we've found shells in Neanderthal middens that you can only get from down on