While visiting former friends some years back in OK and before I knew that swans can attack and be quite viscous, we went to a picnic at a lake that had a few swans visit often.
There was a big one swimming quite near the shore. Finally it got so hot, I had to take a dip. While I was backstroking and side stroking, this creature came up and swam beside me. I amazed! It was such a thrill to be so close to it.
Friends began calling and gesturing to me to come back to shore, so when I did they said I was lucky that swan must have gotten used to a lot of people visiting there.