Elephant Shark Egg Case

Elephant  +

Shark  +

Egg  +

Case  =

 Elephant Shark Egg Case

Found on Brighton Beach in Melbourne about a fortnight ago - here is another photo with the toes of my gym-boots so you can see the size.

At the time I didn't know what it was but suspected that it was the egg case of some sort of shark or ray.  After a little wandering about the www I think that it was most probably an Elephant Shark or Callorhynchus milii.  When hatched this is a funny looking thing - not quite a shark but a closely related Chimaerid - here are some links for lots - more -  information.