Below is a painting of a Hydractinia echinata, a species which forms a mat on gastropod shells occupied by hermit crabs. These two have escaped to go for a day out by the sea.
And what could be more beautiful in the whole of nature than a single leaf. I was out for a walk over the hill close by, when I saw this leaf in the snow. "Stay there" I said as I ran back to get my camera, and it did.