Our sweet, rescue Pitball is afraid of lots of things: the dark, other dogs, thunder, hard rain, fireworks, etc. Yesterday, we took her to a park with a lake. The lake had small waves and at first she was afraid of them.
She pawed at them then jumped on them, and then ran joyously back-and-forth along the coastline. It took two of us to eventually get her out of the water to go home--she didn't want to leave.
We were thrilled to see her so happy. (video attached)