Giant kelp

Ashish, that's a really good idea, but I'm very certain this isn't a worm shell (the ones in the picture are from sabellid worms). Worms don't have multiple "stalks" on their shells (if they do, it's very rare!) and don't have that node on the other end. The node in fact makes me think along the lines of S Frazier, that this is a piece of kelp. The stalks (called a stipe) do tend to get a bit curly like that when they dry, and that node looks like one of the flotation vesicles you find on kelp. And the colour is right too :) I think this is a broken up piece of kelp! Given where you found this, Cindy, it's most like a piece of giant kelp, Macrocystis pyrifera :) Can't be 100% certain, but that's my educated guess haha!

http://iloveshelling.com/blog/wp-content/uploads/2010/06/Worm-shells.jpg

May be Sea worm shell's broken shell.

a type of kelp?