A guy got killed by a shark today. You have a greater chance of being kicked to death by a donkey than you have of dying from complications due to attempted ingestion by a large marine predator. Although I'm not sure what the chance of being beaten by an ass while surfing is. It'd have to be up there with choking on meterorite or being stabbed to death by a fictional character as an unlikely cause of death.
Still I can't get the picture out of my head. Imagine cutting through the surf one day turning around and being faced with the meanest, angriest swimming donkey you've ever seen. I reckon I'd die before it even tried to eat me.