The ring-shaped coral islands known as atolls, like this one in the Maldives Islands in the Indian Ocean, may trace their formation to sea levels repeatedly rising and falling over hundreds of ...

Which ocean has the maximum number of islands in the world? Explore why the Pacific Ocean holds this record, along with its ...

Reef systems that support the vast majority of marine species are under threat. Coral islands have a reputation as being heaven on earth. The reef systems that gave rise to these islands support the ...

Sea levels rising and falling over hundreds of thousands of years may have helped build the oceanic structures Alexandra Witze, Knowable The ring-shaped coral islands known as atolls, like this one in ...