Yes, that is what we are trying to teach Bailey to do. Last year we just worked on him fetching a stick in the lake. Actually, there was no work to it. He swam circles around the boxer when he was just a few months old.
He's a bit bigger now at 1 1/2 years old.
It only took us about an hour to get him to jump off the dock and then to move to jumping off the diving board. He would drag his ankles at first, but he eventually learned that if he jumped, it didn't hurt.