Australia may have a shark partial to humans on its hands: A great white killed a 32-year-old American diver today just 11 miles from where another fatal attack occurred 12 days ago, reports AP. The unidentified American, in the country on a work visa, was killed by the 10-foot shark off Rottnest Island near Perth. The earlier attack, on a 64-year-old swimmer, occurred at a nearby beach. Both attacks follow one in September when a shark killed a bodyboarder. That, too, happened in western Australia. (More Australia stories.)