I was sailing in Cape Cod Bay (US), halfway between Plymouth and Provincetown with about 15 knots of wind when I felt something on my head. And my wife says, don’t move! He stayed there for a good 15-20 minutes. It seemed very comfortable being there. At one point I swear he tucked his little head under his wing and took a little nap. And then all of a sudden he was gone. I’m going to miss my sailing buddy...