How Do Fish Swim in Schools?

(9/18/2013) When I was in the army in Taiwan, I always wondered how clumsy we are to form an array without being shouted. Human are not that well coordinated. I always wonder how fish or birds swim or fly in school so swiftly. Now the science may find the answer: it is in the genes. When I watched BBC's documentary - Blue Planet, I realized that this is small fish's survival strategy. If we see the whole school of fish (instead of individual fish) as an entity, then swimming in schools will guarantee the maximal amount of survivals after being attacked by predators. Are we human beings the same as fish? Can we survive without cooperating with others?