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How is a coral Atoll formed?

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A volcanic island or underwater mountain forms via volcanic activity. This allows a surface near the water surface for corals to attach too. The corals form a ring around the volcano.
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Were the Bahamas formed by coral?

  no it was formed by limestone

What is an atoll?

An island of coral that encircles a lagoon partly or completely.

How is coral formed?

  The skeletons of dead corals are the foundation upon which layerer upon layer of successively younger animals attach themselves. The coral animal, or polyp, is colulmn s

How does coral reproduce how does reef form?

Coral reproduces sexually. If the moon is right coral will release sperm and eggs. If they meet up it will eventually latch onto something and grow. Coralreefs grow because as

How are coral reefs formed?

Coral reefs are formed when one coral stays plotted down in one area. After time, that coral dies, and another attaches to that dead one and lives there. This happens over and

How can coral atoll be attached to ocean floor when coral cannot live or form reefs in the deep ocean?

                Coral atoll are tiny sea animals that live in shallow water, but when reefs form the new coral grow over the skeleton of the ol

What is an atoll formed from?

An atoll is formed from a coral reef and sometimes receding land or a volcanic structure.

What is the largest coral atoll in the world?

  The largest coral atoll in the world is the Kwajalein Atoll.   The largest atoll in land area is Christmas Island.

How are coral and limestone formed?

  coral is a plany. limestone is the poop of long dead organisms pressurised ocer time by rock.   coral is a plant. limestone is the poop of long dead organisms pressur

How do coral reefs form?

When coral polyps die, their exoskeletons are left for new polyps to build upon. Over long periods of time this process creates reefs.

How does an atoll form?

An atoll is formed first as a reef that fringes a volcanic island. As the island sinks (after the volcanic activity has ceased and the crust has cooled, becoming denser), th

How is a coral reef formed?

  A coral reef is formed when the calcium carbonate skeletons of dead corals serve as the foundation upon which layers of successively younger animals attach themselves. 
In Science

How does a coral reef form?

A stony coral colony begins as a single free-swimming founder coral polyp that attaches itself to a hard substrate such as submerged rocks. The founder polyp replicates itse
In Hawaii

How are coral islands formed?

Coral islands are formed by water going through sandy soil when it goes at the bottom the coral island is formed.