Haha! I can't wait to get him in the water - he has big webbed paws!
The issue with him is/was his front legs shake when he sits. From what I've read it's a sign that the muscle and ligaments in his legs are weak which can eventually cause unnatural bowing of the legs because the muscles/ligaments can't support his large bones. Fairly common in Great Dane puppies because their bone can grow faster than their muscles if not receiving the proper nutrients .
I do think he is out growing it now though - he is less shaky and seems to be evening out a bit more.
Here is a completely unrelated video that had me dying. Curly is the best.
https://vimeo.com/158256417
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