Can anyone tell what type of plant this is?

I found it on Jekyll Island Beach in GA. I can't find what it is. I thought it was pretty.



http://i862.photobucket.com/albums/ab185鈥?/a>Can anyone tell what type of plant this is?
This appears to be an egg case from some type of an animal lying on top of a piece of seaweed. You might direct your question to the Zoology group.