Yeah, I think a good number of people don't understand how tsunamis work, even here in Hawaii. During an emergency, radio and TV broadcasters here try to explain that tsunamis are more like solid walls of water - i.e. the entire ocean lifting up six feet, but of course, people don't listen. That makes it very dangerous when there's a tsunami warning (like last Thursday), because people think, oh, it's just like surfing! six feet is not even that much!, which means that some people don't evacuate. Plus there are always some geniuses that insist on sitting next to the shoreline, and the police have to shoo them away.