Corals are very beautiful creatures in the seabed, and there are many types of corals, so people divide corals that grow in different sea locations into shallow sea corals and what? The following Xiaobian network Xiaobian brings: Magical Ocean June 1 answer.
People divide corals that grow in different sea locations into shallow sea corals and shallow sea corals
Correct Answer: Deep Sea Corals.
Analysis: Usually people divide corals that grow in different sea locations into shallow sea corals and deep-sea corals. The more common reef-building coral is shallow sea coral, which is less hard; Deep-sea corals form coral jade with smaller pores and higher density because of the entire petrification process completed in the deep sea.
Shallow sea corals, also known as reef-building corals, are developed into coral reef platforms, which can greatly alleviate the destructive effects of natural disasters such as typhoons and storms on coastal ecology. Deep sea coral, also known as precious coral, because its petrification process is completed in the deep sea, coral jade has smaller pores, greater density, dense structure, and is the main raw material for various carved artworks and jewelry.
Since red coral is the most precious among deep-sea corals, red corals can be divided into five categories: deep red coral, peach coral, pink coral, pink and white coral, and white coral.
How many years does it take for corals to form
It takes hundreds of years to form a coral with a shape of about 50 cm.
Corals grow slowly, increasing by about a centimeter per year. So corals that are about 50 centimeters tall underwater have survived for at least 500 years. If destroyed by humans, it will take at least fifty or sixty years to grow back to its original size.
Corals are shells secreted by polyps. The chemical composition of corals is mainly calcium carbonate, which exists in the form of microcrystalline calcite aggregates. There is also a certain amount of organic matter in the composition, mostly dendritic with longitudinal stripes on it. Each single coral has concentric circles and radial stripes on its cross-section, often white in color, but also a little blue and black. Corals are not only like branches, but also brightly colored and beautiful, can be used as decorations, and have high medicinal value.
Red coral species are few and only distributed in three seas of the world, mainly distributed in Taiwan, Japan, Hawaii and the Mediterranean region of Italy.
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Source: Website babao
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