I found a large seed over 10 years ago on a beach in Jacksonville, Florida. I kept it all these years and decided to try and grow it about 6 months ago. Low and behold, there was life inside! I have no clue as to what kind of vine it is. I also don't know whether it's native or had drifted through the Atlantic ocean and found its way on the sand somehow. Anyway, here's the picture! Hope someone can tell me what it is :)

http://i56.tinypic.com/2m31h8i.jpg

http://i53.tinypic.com/25qf7zd.jpg