atol

The island is the second largest upraised coral atoll in the world.

"You think this whole islet was grown, like a coral atoll?"

Most of the islands comprise low, flat coral atolls, but some rise high above sea level.

Over time however, the island eroded until it became submerged and a coral atoll was left behind.

This nation is made up exclusively of coral atolls.

It is a huge, almost treeless coral atoll, with no water source other than rain.

The island is made up of coral atolls and reef flats.

The land is very low lying and the coral atolls are narrow.

The waters around the coral atoll are rich in diverse marine life.

The deep blue that can sometimes be seen curled in the paw of a coral atoll.