Jasper went for his first swim, a few weeks ago, in our pond. He absolutely loved it. The first time we threw the ball in, he was a little leery about getting in, barked a little bit at the ball, then must have decided to risk it and he took a flying leap right in. After that first time, he couldn't get enough of the water. When it was time to quit swimming, he actually looked at the water, then looked at me, then started whining.
Here are a couple of pics of his swim.
