atoll
The body of water that surrounds the Great Barrier Reef is the Coral Sea.
A body of water enclosed by an atoll is a lagoon.
Lakshadweep is made from tiny marine animals known as polyps. The skeleton of these creature after they die are known as coral. Since Lakshadweep contains many polyps it is known as coral islands
Water, usually. But, an "island" can be anything including a raised platform within a merchant store that is used for security/visibility concerns.
The Caribbean Sea surrounds Aruba. Aruba is an island off the coast of the South American country of Venezuela. It's part of the Dutch speaking group of islands known as the Netherlands Antilles.
A reef that surrounds a volcanic island is known as a fringing reef. These reefs usually form close to the shoreline and develop on the shallow-water platform around the island. The growth of corals on the fringing reef is influenced by the volcanic activity and the geography of the island.
Erehwon Ocean
The Caymans are in the Caribbean Sea.
Coral islands are formed by water going through sandy soil when it goes at the bottom the coral island is formed.
rock. the colors are made by the water.
The Indian Ocean surrounds Christmas Island, an Australian external territory located in the eastern Indian Ocean.
Australia is an island, therefore it is surrounded on all sides with water. More specifically Australia is surrounded by the Tasman Sea, the Great Australian Bight, the Indian Ocean, the Timor Sea, the Arafura Sea, and the Coral Sea.