Nothing, it just waved... Prolly my favorite joke of all time, maybe ever.
OC A Scoli-ocean! (Came up with that recently, hope it tickles your funny bone)
He left his head and shoulders on the beach.
When the big hand touched the little hand
Because it reminded him that time was moving forward.
He saw the bottom of the ocean
Because the sky is
a smile and wave!
Nothing, they just waved.