Some of them are also secreted into the body in the form of mucus, which becomes the nutritional components of other small organisms. It can be said that the rich ecosystem in the ocean is formed on the basis of coral. Another important role played by corals and coral reefs is that they are indispensable in regulating the concentration of carbon dioxide in seawater.
habitat
Coral mainly inhabits tropical and subtropical seas and forms in shallow seas with abundant sunshine and clear water quality.
Temperature is the limiting factor affecting the growth of reef-building corals. Corals can build reefs only when the annual average temperature of seawater is not lower than 20℃, and the most suitable temperature range is 22℃ ~ 28℃, so coral reefs and coral islands are distributed in tropical and subtropical waters.
Habitat: Mediterranean Sea, African Red Sea, Spain, Australia's Great Barrier Reef, Japanese Ogasawara Islands to Ryukyu Islands, Taiwan Province Province (Keelung, Kaohsiung Xiziwan, Pingtung Kenting, Penghu Islands), South China Sea of China and Caribbean Sea.
Extended data:
morphological character
Coral image is like branches, bright and beautiful, and can be used as decorations. Gem-grade corals are red, pink and orange. Red is formed because coral absorbs about 1% iron oxide in seawater during its growth, and black is formed because it contains organic matter. It has glassy luster to waxy luster, opaque to translucent.
growing environment
The water depth is100-200m, and it is distributed in calm and clear rocks, platforms, slopes, cliff surfaces and cracks. For corals born with zooxanthellae, their survival is closely related to the photosynthesis of zooxanthellae, and light is one of the key factors for coral aquarium culture or alien reproduction.
References:
Baidu encyclopedia-coral