I often find cool things while paddling, mostly squid jibs, sinkers and the odd fishing rod. But today I found something really cool. I've seen them in shell shops before but never in Port Philip Bay. I have no idea how it got to the Black Rock shorline in such good condition. It's a paper nautilis - I may have to do some research to see if this is some sort of natural thing.

en.wikipedia.org/wiki/Argonaut(animal)