And no doubt put in the movie on purpose.
I cant remember if they showed this in the movie....
But here is a picture of the actual doll head from the wreck.
That's a shot from the beginning of the film... but, unfortunately, not the actual wreck. [Though it's a common misconception.]
As far as I can gather, Robert Ballard seems to have spotted a doll head in the debris field on a 1986 dive, but the single photograph is from a distance, a different angle, and very grainy.