Sharks kill remarkably few of the people they encounter, and this Naked Science episode asks why the fear outruns the statistics. California Academy of Sciences ichthyologist John McCosker lays out the numbers on camera: over 400 living shark species exist, roughly 30 have been involved in unprovoked attacks on humans, and only about 7% of those attacks prove fatal. The film explains the standard shark hunting pattern, a single crippling bite followed by a wait for the prey to bleed out, and notes that this routine rarely plays out with human victims, since sharks don't appear to regard people as food. It profiles the three species most often linked to attacks, tiger sharks, bull sharks, and great whites, and revisits surfer Bethany Hamilton's 2003 encounter with a tiger shark that cost her an arm but ended without the animal returning. Tiger sharks get singled out as indiscriminate feeders, nicknamed the ocean's garbage disposal, which may explain Hamilton's case without confirming it. The film closes on a simpler theory for rising attack numbers: more swimmers, same ocean.