Rennell , 86 km long x 15 km wide , is the largest raised coral atoll in the world 伦内尔岛长八十六公里，宽十五公里，是世界上最大的上升珊瑚环礁。
1952 united states detonated her first hydrogen bomb , at eniwetok atoll in the marshall islands in mid - pacific 美国在太平洋中部绍尔群岛的埃尼威托克环礁爆炸第一颗氢弹。
Seenu is the " second city " of the maldives , and the best base from which to visit traditional maldivian island communities 斯努环礁是马尔代夫的“第二城市” ，是造访马尔代夫传统岛屿社区的最佳中转驻地。
According to the indonesian authorities , storm surges and erosion have worsened considerably in that time and the atolls have been losing bits regularly 根据印尼官方，暴浪和侵蚀在20年来严重恶化而环礁均匀地损失。
Within the irregular are of coral the lagoon was still as a mountain lake - blue of all shades and shadowy green and purple 在珊瑚礁不规则的弧形圈里，环礁湖平静的象一个山潭- -湖水呈现各种细微色差的蓝色、墨绿色和紫色。
During a 1997 vacation to mexico ' s baja california , close and her daughter annie joined a whale watching expedition to a coastal lagoon 1997年在墨西哥的下加利福尼亚度假期间，克洛斯和女儿安妮加入了一支去海边环礁湖观鲸的探险队。
The atoll is comprised of four large coral islands which enclose a shallow lagoon ; the group of islands is itself surrounded by a coral reef 阿尔达布拉环礁由4个大的珊瑚岛组成，岛群内怀抱一浅浅的礁湖，同时岛群本身又被一珊瑚礁所包围。
The region , a 900 - mile ( 1 , 450 - kilometer ) arc of 76 sparsely populated atolls and two islands , is one of the world ' s primary producers of cultured black pearls 这片900英里的弧形区域由稀疏分布的76个环礁和2个岛屿组成,它也是世界上主要黑珍珠产地之一。
Atoll explorer has been especially designed for inter - island cruising since 1996 , when she became the first ship to offer first class cruising in the maldives 从1996年以来，环礁探险舰主要是为内岛游弋而设计的，那时她是马尔代夫第一艘提供一流游弋的探险舰。
More than 100 australians and new zealanders of cook island descent are stranded on the remote pacific atoll of pukapuka in the northern cook islands 库克群岛血统的澳大利亚人、新西兰人共计100多人被困于一个人迹罕至的太平洋环礁上，该环礁位于库克群岛以北，名叫普卡普卡岛。
