A coral reef surrounding a volcanic island in the tropical sea will grow upwards when the island falls (sinks) and becomes an "almost atoll" or barrier reef island, as embodied by an island like Aitutaki on the Cook Islands, Bora Bora Bora and others on the Society Islands. Situated in the Coral Sea, northeast of Queensland, Australia, Lihou Reef is the second largest atoll after the total area. His name reminds of beautiful women in tiny swimsuits on a tropical paradise in the water, and his location reflects the feeling. Rocas Atoll belongs to the archipelago of Fernando de Noronha, which is of volcanic origin. Atoll 4 is located near Banco Chinchorro in Mexico.
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