A favorite photo from a long time ago. Sunrise on what was to be a hot, really steamy day. Fog out on the water (unusual) and I could barely see the bow of the boat. I was moving ahead at maybe 1/4 knot because of the area. I was going so slow and the water was so still that you couldn't really tell we were moving - there was nothing on the horizon to see. The only way I could tell I was moving was to look at the water next to the boat and see very tiny ripples from the hull breaking the surface.
After a while, the ripples just stopped. What!? It took me a few minutes to figure things out. I was aground. I didn't feel a single thing! Luckily, plenty of black muck on the bottom. It was really a strange feeling, tho.