What would you like to do?
How is a coral Atoll formed?
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.
Was this answer useful?
Thanks for the feedback!
no it was formed by limestone
An island of coral that encircles a lagoon partly or completely.
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…haped. Its lower end is attached to the hard floor made of the preceding coral skeletons of the reef, and its upper end extends into the water. There hard and soft corals, depending on the type of skeleton secreted. The hard-coral polyp deposits a cup-like solid skeleton of calcium carbonate around itself into which the polyp withdraws during the daytime. For this reason, deep sea divers see only the skeletons-and not the polyps-of hard corals.
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… coral dies it becomes a skeleton to make a new reef.
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… over to form coral reefs. Coral reefs are built mainly from corals and sea anemones. Since corals are colonial animals (meaning, they grow in colonies), their skeletons grow together in large masses. These skeletons build up a chain of large stony structures called a reef. New corals grow on the reef. When the corals die, their skeletons add up to the reef. The cracks and holes are filled with sand and the remains of other reef plants and animals. Only the outermost layer of the reef consists of live corals and sea anemones. It takes a long time for a coral reef to form.
Warm, shallow seas
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…d. As the ocean crust beneath the volcano sinks, the coral sinks with it, and the new coral continues to form on top of the old. Eventually, coral covers the whole volcano. It can survive with the ocean waves bringing in new food and more marine life.
An atoll is formed from a coral reef and sometimes receding land or a volcanic structure.
The largest coral atoll in the world is the Kwajalein Atoll. The largest atoll in land area is Christmas Island.
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…ised ocer time by rock.
When coral polyps die, their exoskeletons are left for new polyps to build upon. Over long periods of time this process creates reefs.
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…e reef continues to build upward, eventually ending up as a ring-shaped structure.
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. … 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.
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…lf repeatedly through asexual reproduction, producing a colony. The colony consists of a base which is attached to the reef substrate, a growing edge zone (where new coral polyps are produced), and an upper surface that is exposed to light that filters down through the water.
Coral islands are formed by water going through sandy soil when it goes at the bottom the coral island is formed.