A Feather, A Foe ( Nothing To Do With The Riddle )

Riddle: I'm the part of the bird that is not in the sky. I can swim in the ocean and yet remain dry... what am I?

Answer: A shadow.

Source: https://www.riddles.com/4388

I'm the part of the bird that is not in the sky. I can swim in the ocean and yet remain dry... what am I? — a feather, a foe ( nothing to do with the riddle ) by reeses2005 v1.

Riddle: I'm the part of the bird that is not in the sky. I can swim in the ocean and yet remain dry... what am I? Answer: A shadow. — by reeses2005 v2.