Ow. Details are
from CNN.
Summary: this 20-year-old guy was spearfishing in Greece when an accident happened. The story doesn't say how it happened, but says that the guy wound up floating in the ocean for 6 hours, aware of where he was, but unable to speak and having trouble breathing.
Friends of his told area lifeguards that he was missing, and then he was found with this 40 inch spear going up through his jaw and out the top of his head. It was his own spear, from his fishing gun.
And then the reason it became a story of interest: doctors removed the spear, and not only did the guy live, but he suffered no complications! The spear went through an area of the brain which is non-functional.