Korally

They mainly consist of calcium carbonate with admixtures of magnesium carbonate, and a small amount of iron oxide.

The largest coral reef is located near the northeast coast of Australia. It stretches for a distance of 2,200 km.

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Corals come in several types: tree-like, fan-shaped, etc.

Coral reefs have been found in the cold waters of the Atlantic Ocean near Scotland.

Ultraviolet light can harm corals in shallow water. If the reduction of the Earth's protective ozone layer allows more ultraviolet radiation to reach the earth, corals may disappear from such a habitat as shallow water.

Star-shaped grapes from Japan 🇯🇵 😍

Thinner plate corals can only survive in sheltered lagoons or deeper water.

Because of their solid structure, brain corals can live in ocean currents and strong waves.

Large, hard coral heads often serve as a "cleaning station" for some species of animals and fish.