What battle in the Pacific was the most decisive naval ation of World War 2?

The Battle of Midway, fought on June 4, 1942. The US Navy sprang a trap on the Japanese, and destroyed four aircraft carriers for the loss of one. The outcome of this battle stunned the Japanese, and permitted the US to launch a counteroffensive. The ensuing Battle of Guadalcanal finally turned the tide of the Pacific War, and gave the US the initiative.