Singapore is a sovereign island city-state in maritime Southeast Asia. It lies off the southern tip of the Malay Peninsula, bordering the Straits of Malacca to the west, the Riau Islands to the south, and the South China Sea to the east. The country's territory is composed of one main island and 63 satellite islands and islets. It has the second greatest population density in the world.

Hawaii is a U.S. state located in the Pacific Ocean. It is the only state outside North America, the only island state, and the only state in the tropics. Hawaii is also one of a handful of U.S. states to have once been an independent nation. Hawaii encompasses nearly the entire Hawaiian archipelago, comprised of 137 volcanic islands spanning 1,500 miles (2,400 km).