I used to watch them at our creek, when they were there at the same time that we were.
Sometimes, when we went down the road to visit a neighbor, one would run alongside the car. They moved as the crow flies, so they would be in the water, then, when the water made a curve, they would keep going straight on land. They are fast, even on land!
Ours look a tad more gray than the ones in the video, unless it has to do with being wet or not. Ours are always playing in the water.
Love All Life; Thank You For Posting! :)