Bikini Atoll (pronounced or ; Marshallese: , , meaning coconut place) is an atoll in the Marshall Islands. The atoll consists of 23 islands totaling surrounding a deep central lagoon at the northern end of the Ralik Chain (approximately northwest of Ailinginae Atoll and northwest of Majuro). Within Bikini Atoll, Bikini, Eneu, Nam and Enidrik islands comprise just over 70% of the land area. Bikini and Eneu are the only islands of the atoll that hosted a permanent population. Bikini Island is the northeastern most and largest islet. Before World War II, the atoll was known by its Baltic German name as Escholtz Atoll. Between 1946 and 1958, 23 nuclear devices were detonated by the United States at seven test sites located on the reef, inside the atoll, in the air, or underwater. They had a combined fission yield of 42.2 Mt. The testing began with the Operation Crossroads series in July 1946. Prior to nuclear testing, the residents initially accepted resettlement voluntarily to Rongerik Atoll, believing they would be able to return home within a short time. Rongerik Atoll could not produce enough food and the islanders starved for lack of food. When they could not return home, 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 the Bikini Island in 1970 until further testing revealed dangerous levels of strontium-90. The islanders have been the beneficiary of several trust funds created by the United States government which as of 2013 covered medical treatment and other costs and paid about $550 annually to each individual. In 1998, the Bikini Council authorized diving operations as a means to generate income for Bikini islanders currently and upon their eventual return. The tours, limited to fewer than a dozen experienced divers a week, cost more than US$5000 and include detailed histories of the nuclear tests. The dive operations were managed from a shore-based facility until operations were suspended in 2008 when the Marshall Island airline ceased service due to unresolved mechanical issues. They have since been resumed from a live-aboard ship. While the island may be habitable in the near term, virtually all of the islanders alive today have never lived there. As of 2013, about 4880 Bikini people live on Kili and other Marshall Islands, and some have emigrated to the United States. Bikini Island is currently visited by a few scientists and inhabited by 4-6 caretakers. The atoll and island gained world-wide attention due to nuclear testing, and because of the remaining direct tangible evidence of the nuclear tests, UNESCO named it a World Heritage Site. Building on this attention, French engineer Louis Réard named his new swimsuit design the bikini, in hopes that its revealing style would create an “explosive commercial and cultural reaction” similar to the 1946 nuclear explosion at Bikini Atoll.