MH and MHL are the ISO-3166 country codes for the Marshall Islands, a republic island country and associated state (as opposed to protectorate) of the USA in the Pacific. MH is east of the Philippines, north of New Zealand, and northeast of New Guinea and Australia.
Maps:
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MHL comprises 29 atolls and 5 islands in two groups named the Ratak Chain to the east, and the Ralik Chain to the west. Ratak means sunrise and Ralik means sunset in the Marshallese language.
The Ratak Chain comprises these atolls and islands:
Ailuk Atoll
Arno Atoll
Aur Atoll
Bikar Atoll
Bokak Atoll
Erikub Atoll
Jemo Island
Knox Atoll
Likiep Atoll
Majuro Atoll
Maloelap Atoll
Mejit Island
Mili Atoll
Taka Atoll
Utirik Atoll
Wotje Atoll
The Ralik Chain comprises these:
Ailinginae Atoll
Ailinglaplap Atoll
Bikini Atoll
Ebon Atoll
Enewetak Atoll
Jabat Island
Jaluit Atoll
Kili Island
Kwajalein Atoll
Lae Atoll
Lib Island
Namdrik Atoll
Namu Atoll
Rongdrik Atoll
Rongelap Atoll
Ujae Atoll
Ujelang Atoll
Wotho Atoll
Of these, perhaps the most familiar are the Bikini Atoll, Enewetak Atoll, and Kwajalein Atoll.
Bikini Atoll was a nuclear test site in the 1940s and 1950s. The US detonated 23 nuclear devices between 1946 and 1958 at seven test sites on the reef, inside the atoll, in the air, and underwater. They had a combined fission yield of 42.2 Mt. The testing began with the Operation Crossroads series in July 1946. The residents initially accepted resettlement voluntarily to Rongerik Atoll, believing that they would be able to return home within a short time. However, Rongerik could not produce enough food, and the islanders starved. They could not return home, so they were relocated to Kwajalein Atoll for six months before choosing to live on Kili Island, a small island one-sixth the size of their home island. Some were able to return to Bikini Island in 1970; however, further testing revealed dangerous levels of strontium-90. The United States government established several trust funds which as of 2013 covered medical treatment and other costs and paid about $550 annually to each individual.
Yes you read that right, $550 annually per person.
Enewatak Atoll, a large coral atoll of 40 islands known to the Japanese as Brown Island or Brown Atoll, was also a nuclear test site during those same decades. 43 tests were conducted. Additionally, test missile nose cones were tested to splash down in the vicinity. The short story The Terminal Beach by J. G. Ballard is set on an island of Eniwetok in the aftermath of the nuclear tests.
Kwajalein Atoll is one of the world’s largest atolls as measured by the area of enclosed water. It comprises 97 islands and islets. The WWII Battle of Kwajalein, 31 January - 03 February 1944, was part of the island hopping campaign in the US’s advance on Japan. On 01 February 1944, Kwajalein was the target of the most concentrated bombardment of the Pacific War. Thirty-six thousand shells from naval ships and ground artillery on a nearby islet struck Kwajalein, in addition to B-24 Liberator bombers’ bombardments.
The word atoll comes from a word meaning the palm of the hand in the Dhivehi language spoken on the Maldives.