An atoll is a ring-shaped coral reef and features a lagoon. Some examples of atolls are the Bikini atoll, Tubbataha Reef and Lighthouse Reef.
bikini atoll
the oppsite of atoll is planet
Atoll is a noun.
bikini atoll
Allot and atoll.
A tropical lagoon is encircled by an atoll.
The Bikini Atoll is an atoll in the Marshall Islands and was the site of many American nuclear tests in the 1940s and 1950s.
A atoll
Let's not strand ourselves on this atoll.
The population of Rongelap Atoll is 19.
Utirik Atoll's population is 409.
Wotho Atoll's population is 160.