In the spring of 2007, National Geographic warned, "The oceans are in deep blue trouble. From the northernmost reaches of the Greenland Sea to the swirl of the Antarctic Circle, we are gutting our seas of fish." There were legitimate grounds for concern. After increasing more than fourfold between 1950 and 1994, the global wild fish catch reached a plateau and stagnated despite exponential growth in the fishing industry. As numerous scientific...