Physiology probably has something to do with it, Hans. S'like I said, I can't tread water... do exactly what Soli listed out (and a couple variations on that theme over the years), actually had a couple goes where there was someone literally there moving my limbs in the apparently correct way, and... still sunk. Treading just doesn't seem to work for me. Expand outward to other forms of water interaction and, welp.
And yikes, Vec. I did almost drown when I was much younger (during swimming lessons, of all things

), but fortunately managed to come back from it without anything permanent. Is shame to not be able to, really. Swimming around under the water is pretty great

Now,
boats... boats kinda' terrify me. Riding in them, anyway. Ruddy bullfrogs.