Bikini Atoll is an uninhabited 6.0-square-kilometer atoll in one of the Micronesian Islands in the Pacific Ocean. It is a member of the Marshall Islands. It consists of 36 islands surrounding a 594.2-square-kilometer lagoon. As part of the Pacific Proving Grounds it was a site of more than 20 nuclear weapons tests between 1946 and 1958, including the first test of a practical hydrogen bomb in 1954.
