environment in large part due National Park Rules. It is prohibited to transport any live material to the islands, or from island to island, not to take any food to the uninhabited islands, not to feed or touch the animals. It can be dangerous and in the long run would destroy the animals' social structure and breeding habits. The organisms that are in isolation from the human diaspora can evolve in unique ways. World opinion clearly states that Galapagos is of inestimable value to the world's culture and that its environment must be spared destruction.
Dutch Harbor in the Aleutians some time between May 30 and June 10. This was almost certainly a diversionary move. But where would the main Japanese attack fall—and when? There was no clear-cut answer. Several Japanese strategies appeared possible. Nimitz himself thought Midway was the target, but in Washington Admiral Ernest J. King, Chief of Naval Operations, who was working from essentially the same information, concluded that Oahu was. Yamamoto was well aware of the inestimable advantage of surprise, that element of warfare which so often decides the course of battle. He felt confident that the United States, unable to defend all points, would have to counterattack at a time and place governed by the Japanese moves, giving Yamamoto control of every situation. In addition to this tactical initiative, he had an overwhelming preponderance of forces. To his 11 battleships, 5 carriers, 16 cruisers, and 49 destroyers, Nimitz could oppose no battle-
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