I'm The Part Of The Bird That's Not In The Sky Riddle

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

Answer: I am the birds shadow.

Source: https://www.riddles.com/174

I'm the part of the bird that's not in the sky. I can swim in the ocean and yet remain dry. What am I? — I'm the part of the bird that's not in the sky riddle by Anonymous v1.

Riddle: I'm the part of the bird that's not in the sky. I can swim in the ocean and yet remain dry. What am I? Answer: I am the birds shadow. — by Anonymous v2.