World War II skull. Skull of a Japanese serviceman resting on coral. Photographed in Truk Lagoon, Micronesia, the site of a 1944 World War II battle where many Japanese ships were sunk by American forces. Thousands of sailors and aviators died, and soon after the war the site was declared a war grave. It is now also a popular tourist attraction for divers, who come to explore the remains of this sunken fleet.