Eli found his hand today

We spent the day at the beach and when we got home around 3pm, I sat down to feed Eli. He is starting to get distracted and pull off, and when he did this time he found his hand. It was up by my collar bone, and he was looking up at me, then noticed his hand. He took it off of me and was waving it in the air, twisting his wrist back and forth and just watching. I said "You found something, didn't you?" And he looked in my eyes and smiled like he understood me.