What is a coral bone and what is a coral like

Coral bones are cast from polyps and then petrified to form coral stones, which are formed when they break into pieces. Because the coral bone is a porous structure, it is particularly suitable as a living place for nitrifying bacteria, which can decompose ammonia nitrogen in water and have a purifying effect on water quality. <

Coral bones are cast from polyps and then petrified to form coral stones, which are formed when they break into pieces. Because the coral bone is a porous structure, it is particularly suitable as a living place for nitrifying bacteria, which can decompose ammonia nitrogen in water and have a purifying effect on water quality.

1. Coral bones can increase the pH value of water, and when the fish tank falls into acid, it will balance the water quality of corals, which can cultivate nitrifying bacteria and reduce acid.

2. Coral bones are treasures among ornamental stones and have high ornamental value. Many coral reefs formed by coral bones have become tourist attractions.

3. Coral reefs provide good living conditions for a variety of marine organisms, which is conducive to the protection of biodiversity and the marine environment.

4. Coral reefs contain abundant oil and gas resources. In the sedimentary layer of coral reefs and their lakes, there are also coal, bauxite, manganese ore, phosphate rock, and polymetallic bed-controlled deposits such as copper, lead, and zinc are found in the coarse clastic rocks of the reef.

5. Coral bones can be used as raw materials for burnt lime and cement, and corals in various shapes can be used as decorative handicrafts.

Coral is like a tree branch, bright and beautiful in color, and can be used as an ornament. Gem-quality corals are red, pink, orange-red. The red color is due to the absorption of about 1% of the iron oxide in the seawater during the growth of the coral, and the black color is due to the presence of organic matter.

It has a vitreous to waxy luster, opaque to translucent.

Corals live in calm and clear reefs, platforms, slopes and cliff faces, hollows and crevices at depths of 100-200 meters. For corals that live in symbiosis with zooxanthellae, their survival is closely related to the photosynthesis of zooxanthellae Light is one of the key factors for coral aquarium culture or ex situ reproduction.

According to the ecological environment and characteristics of the growth of stony corals, they can be divided into two categories: reef-building corals and non-reef-building corals (or deep-water stony corals).

The polyp is shaped like a flower, with a circle of tentacles at the top, like petals, and a cylindrical column that resembles the ovary of a flower. Polyps absorb calcium carbonate from dissolved seawater and use it to make their own bones.

The white coral we usually see is actually the skeleton left behind by the death of the polyp, and the real living polyps are the tender flowers that bloom on them"Florets"。

Colloquial name"Ox blood red"The bright red coral is the most precious, and it has an unsurpassed grace and luxury. The lighter the red color of coral, the lower its value. However, pink and white coral are also beautiful when made into necklaces, so they are becoming more and more popular with young girls, and ** is also rising.

According to the bone texture and polyp size, corals are generally divided into several types, such as large polyp stony corals, small polyp stony corals, soft corals and sea anemones Coral reef ecosystems are also known as underwater "tropical rainforests", which have important functions such as protecting the coast, maintaining biodiversity, maintaining fishery resources, and attracting tourism.

Many corals are colorful, the bright colors are not inferior to all kinds of flowers on land, some coral species also have amazing fluorescence effects, different types of corals can be built in the aquarium to form a coral reef ecosystem, so that corals have great competitiveness in the aquarium industry.

At the white larval stage, the polyps are automatically fixed to the calcareous bone piles of the progenitor corals, which are the shells secreted by the polyps, and the chemical composition of the coral is mainly CaCO3, which exists in the form of microcrystalline calcite aggregates.

Coral is an animal, isn't it because coral looks like branches, so people think corals are plants? In fact, coral is a kind of moving coral, which is a kind of sea creature composed of polyps!

There are many kinds of corals, such as stony corals, and corals are not stones, plants, but animals. They also have their own little helpers, because there are lobsters living in it, and when an enemy attacks, the lobster will come out to help! For example, if a starfish is coming, the crayfish will use its big tongs to cut the starfish!

Coral: It eats some very small animals that float up on the bottom of the sea. Porsche's ones are red, pink, reddish-orange.

The chemical composition of the coral is mainly CaCO3 (calcium carbonate), which exists in the form of microcrystalline calcite aggregates, and there is a certain amount of organic matter in the composition, and the form is mostly dendritic.

There are longitudinal stripes on it, each single coral cross-section has concentric circles and radial stripes, the color is often white, there are also a small amount of blue and black, the coral is not only like a branch, the color is bright and beautiful, it can be used as an ornament, and it also has a high medicinal value, but its role in the environment is irreplaceable compared to the medicinal value.

The bones of polyps are calcium carbonate.

There are many hollow tentacles on the top of the polyp's soft body, which resemble flowers and have a gorgeous shape. The vast majority of polyps are secreted from the ectoderm into calcareous exoskeletons, and a few species have bones produced in the mesocolloidal layer.

During the growth process, the insects absorb calcium and carbon dioxide in the seawater, which form calcium carbonate in the body of the polyp, and then they will secrete the calcium carbonate and gradually become the "skeleton", and the children and grandchildren of the polyps continue to reproduce on the original skeleton to form coral.

All polyps are sedentary to the sea front and live on a blind bottom (benthic animals); Most of them breed in the warm, clear shallow sea zone, the water depth is generally not more than 90 meters on the seabed of the continental slope, because it is difficult to survive below 15, and the water temperature is 25 29, the water depth is less than 20 meters of the zone is the most developed.

Coral reefs:

A coral reef is a structure formed by animals of the order Stony Coral, which can be large enough to affect the physical and ecological conditions of its surroundings. Coral reefs are found in both deep and shallow seas, and they are formed over hundreds to thousands of years by the bones of thousands of polyps made up of calcium carbonate.

Reef-building corals are coelenterates that live in shallow waters within 40 meters of water, so coral reefs are mostly distributed in shallow waters on the continental edge, island coasts and top of submarine reefs, with coral reefs best developed in the central and western Pacific Ocean, eastern and western Indian Ocean and Caribbean coasts.

Coral reefs can be divided into three types: edge reefs, barrier reefs and atolls. Marginal reefs are coral reefs distributed on the edge of land, such as the coral reef of the Hengchun Peninsula in southern Taiwan, China; Barrier reefs are located on the periphery of the land, separated by lagoons from the land, such as the Great Barrier Reef in eastern Australia; Atoll is a coral reef in the ocean, similar in shape to a ring or horseshoe, such as Dongsha and Nansha Islands in the South China Sea.

Coral reefs are highly productive and biodiverse, and are often referred to as rainforests or oases in the ocean.