"Asahuna, are we going to dive now? I really don't want to dive anymore, shall we stay here like this?"

Liu Jingjing was lazily lying in Zhao Chaogang's arms, she only wanted to stay in Zhao Chaogang's arms like this, enjoying the warmth that only belonged to her, as for diving, Liu Jingjing didn't want it at all now.

For a girl of her age, enjoying the love with her lover is more important than anything else.

"Hehe, how can this work. Zhao Chaogang gently helped Liu Jingjing up, let Liu Jingjing stand up, on the other side Pingping was still looking here, if he was just on the beach, holding Jingjing and enjoying the world of the two, wouldn't it be too unfair to Pingping. Where would Zhao Chaogang do such an outrageous thing, so even if this request was made by Liu Jingjing, Zhao Chaogang still refused.

Of course, Zhao Chaogang will not be like those macho people, when making decisions, he is very arrogant, and does not consider the feelings of others at all, Zhao Chaogang After making this decision, he quickly explained to Liu Jingjing softly: "Jingjing, there are not just the two of us here, Pingping is still watching us on the beach." If it weren't for Pinkie's body not suitable for diving, Pinkie would definitely be with us now, so would it be fair for Pinkie on the beach if we just stayed on the beach and enjoyed the world of two people alone?!

Jingjing, when you wanted to go diving in the sea with me, Pingping generously agreed, so. Jingjing, you can't do things according to your own temperament. ”

"Uh-huh....... Liu Jingjing's face was very embarrassed when Zhao Chaogang said it, and she quickly realized it. Her behavior just now was indeed a little selfish, she just thought about her feelings, and didn't think about anything else at all, and then recalled Sister Pingping's generosity, of course Liu Jingjing would feel very embarrassed.

"Alright, alright, Jingjing, you just need to know that you are wrong. There are no outsiders here, so they are out of the way. ”

Zhao Chaogang relieved Liu Jingjing, and the three of them got along. The difficulty and trouble are still not small, but who said that this was Zhao Chaogang's own choice, so Zhao Chaogang had no choice but to deal with all the problems between the three of them.

"Hmm. Asahuna. Then let's dive!" Liu Jingjing's face was now flushed, so she now desperately wanted to dive directly into the seawater, so that the embarrassment she had just now disappeared, so Liu Jingjing was anxious to dive now.

This is tantamount to covering his ears and stealing the bell, which made Zhao Chaogang on the side almost laugh.

Of course. Zhao Chaogang is still not the time for him to laugh, if he doesn't really laugh at this time. That turned out ....... Zhao Chaogang shuddered, he didn't want the flesh on his ribs to turn blue-black.

Jingjing's pinching magic skills are absolutely powerful!

"Okay, then let's start diving. After Zhao Chaogang said this, he began to bring the tools needed for diving to the two of them.

The waves are very strong on the beach, and if you want to dive directly into the sea from the beach, it will be very difficult without a lot of hard training.

Here on the beach, once you go to the sea, the waves will continue to hit you, making it difficult for you to swim towards the distant sea, and even if you overcome the constant impact of the waves on you, your body has already consumed a lot at this time, and it is unlikely that you want to dive in the sea.

Therefore, if other people are diving in shallow water, the diving caregiver will send them to the surface by boat, and then bring some diving equipment, such as breathing apparatus, diving suits and other diving tools, into the water, so that it is safer.

However, these difficulties are not a problem for Zhao Chaogang and Liu Jingjing at all, and it is really not qualified for the waves to want to cause trouble for them.

"Okay, bring the diving breathing apparatus, Jingjing, let's go into the water!" Zhao Chaogang gently helped Liu Jingjing bring the diving breathing apparatus, of course, it is a very simple one, not those very professional diving equipment.

Breathing in the ocean is actually not a problem for cultivators like Zhao Chaogang and Liu Jingjing, and now Zhao Chaogang has brought a simple diving breathing apparatus to Liu Jingjing, just to let Liu Jingjing have an adaptation process in the sea.

After Liu Jingjing became a cultivator, she had not dived to the beach, so it was still a bit difficult for her to let go of the diving breathing apparatus at once and go to the beach to dive, so Zhao Chaogang would bring Liu Jingjing a diving breathing apparatus.

After Liu Jingjing adapts to the sea, Zhao Chaogang will remove this simple diving breathing apparatus. Diving in the sea, without a scuba and with a scuba are two different concepts.

"Well, Chaogang, then let's go into the water!" Liu Jingjing took Zhao Chaogang's hand and began to walk slowly towards the sea. When he was about to enter the water, Zhao Chaogang made an 'OK' gesture to Li Liping in the distance, and then, directly following Liu Jingjing, dived into the seawater, and Zhao Chaogang and Liu Jingjing's diving journey began.

The shallow sea is a colourful world of creatures bathed in bright and warm waters, wonderful little fish roaming among the gorgeous corals, and exotic shellfish, starfish, jellyfish and seaweed of all colors dance in the waves.

The sunlight casts on the tranquil ocean floor, as if it were light that has been tortuously analyzed through the spectrum. Even the rocks, plants, shells, and corals at the bottom of the sea are dyed in the sun's colors, which is amazing.

Plants on land include trees and flowers, which make up large forests, grasslands, or garden green spaces. The plants in the ocean are called seagrasses, and some seagrasses are so small that they can only be seen by magnifying dozens or hundreds of times with a microscope. They are made up of single cells or a string of cells with different colored branches and leaves, which float in the water.

Single-celled seagrasses grow and reproduce quickly, increasing many times a day. Though. They are constantly devoured by various fish and shrimp, but the numbers are still huge.

Large seagrasses are tens or even hundreds of meters long, and their soft bodies cling to the bottom of the sea. It is swaying back and forth by the impact of the waves, but it is not easy to break. A variety of shells and molluscs walk on the soft sand, and the seabed is dressed up like a garden. Above the head, there are all kinds of jellyfish fluttering, just like flowers scattered by fairies.

Such a beautiful scenery certainly made Liu Jingjing intoxicated, and women are the most resistant in the face of such beautiful things.

"Asahuna. Look, look, what a big turtle!" Liu Jingjing no longer had a simple diving breathing apparatus on her body at this time. After a few minutes of adaptation, Liu Jingjing can now swim freely in the sea like a fish.

The cultivators have plenty of lung capacity, and there are some small spells that can extract oxygen from seawater. So that cultivators can survive in the ocean for a long time.

"Huh. It's really, this turtle is really big, it's really rare to see such a big turtle!" Zhao Chaogang also sighed, all because the turtle in front of them was really huge, as big as two cars, such a big turtle, Zhao Chaogang and Liu Jingjing had never seen it.

It's a pity. This turtle is a little bigger, yes, but. This turtle is just an ordinary turtle, it has not yet become a brute beast, such a turtle can only make Zhao Chaogang and Liu Jingjing sigh in their mouths, and the others will not be pressed anymore.

"Coral, Chaozuna, look, it's red coral...... it's a big piece! Chaozuna, let's go over and take a look, I like red coral the most." ”

"Okay, okay, we'll go over now, Jingjing, don't worry!"

Soon, Zhao Chaogang and Liu Jingjing came to the location of the red coral, just came here, Zhao Chaogang and Liu Jingjing were attracted by a piece of fiery red in front of them, this is a red coral, red extremely dazzling red coral.

Red coral (scientific name: Coralliumrubrum) camp group life. The diameter of the specimen is generally 0.5mm~2cm, and each specimen has 8 pinnate tentacles. The diaphragm is 8 unpaired, the diaphragm muscle grows ventrally, and the diaphragm filament is single-leafed. There is only one oral groove, which is located on the ventral surface.

Red coral skeletons are mostly found in the body, or they occur in the body and extend to the surface of the body. It has a calcareous axial bone, which is tree-like branched but not in a plane, and the bone is pale pink to dark red.

In addition to the axial bone, calcareous bone needles are distributed in the mesocolloidal layer, and often live together with reef-building corals. The bones are dense and brightly colored, often used as gemstones or carving materials, and grow in tropical and subtropical regions near the equator at temperatures higher than 20 °C.

The pearls of ancient Chinese emperors were made of red coral, which can also be used in medicine, which has the effect of fixing the eyes and opening the eyes. Due to large-scale mining, the number has decreased sharply, and it is listed as a first-class protected animal in China.

Red coralRed coral is a group animal of the hydra type, and the coral individual living in groups. The skeleton of red coral is a dendritic complex. Each branch center has a skeletal axis, and the soft body surrounds the bone, around which many polyps grow. These cylindrical shafts are up to 20 cm high and 3 cm in diameter.

The soft body of red polyps has a mesocolloidal layer, an endoderm, and ectoderm cells. Red polyps secrete a skeleton called red coral through the ectoderm. Rigid colonies grow in all directions on the basal column, creating a hairy shape. The branches are distributed with hemispherical short calyxes, and the polyps with base extension are white and transparent, with eight small pinnae with good antennae.

Once the coral is touched, the polyp is retracted within the cauldrium. The columnar branches have calcareous bone needles and bone fragments, radially symmetrical, and the warts are short and rod-shaped. The color is usually dark red.

The red coral body is columnar, the length of the column varies according to the species and living environment, and the body is fixed to rocks, sandy bottoms, shells or other objects with a base disk. The free end is the mouth end, and the mouth end expands outward to form a mouth plate, and there are one or many circles of tentacles around the mouth plate, and the tentacles are hollow.

The eight coral tentacles are all 8 in a pinnate shape, that is, each tentacle extends to the sides in rows of small protrusions.

The structure of the gastric cavity of corals is also more complex than that of hydroids, that is, the endoderm of the body wall extends to the gastric cavity in order to form many septums, and the gastric cavity is divided into many chambers to increase the surface area of the gastric cavity, such as the octagonal coral has 8 septums, the upper end is connected to the oral tract, the histological structure of the diaphragm is composed of two layers of endoderm cells, and the middle is sandwiched with a mesocolloid layer, and the inner part of the primary septum is connected with the endoderm of the oral tract. The inner end of the diaphragm of other grades is free, and the free end of the diaphragm swells to form a trilobal shape, which is called the mesenterialfilament.

The surface of the cells on the two lateral lobes of the septal filament is distributed with a large number of cilia. The shaking of the cilia is conducive to the circulation of fluid in the gastric cavity, and there are a large number of cnidine cells and glandular cells distributed on the middle lobe, so the cnidary cells in the gastric cavity of Hushana are endodermal origin.

Glandular cells can secrete digestive enzymes for the digestion of food. The diaphragm filaments of octacorals have only middle leaves and no lateral leaves.

Diaphragm filaments are generally longer than septums, and their ends are free in the cavity or wrapped around the bottom of the stomach cavity, called acontium, and can sometimes be caused by small holes in the body wall or from the mouth to assist in predation.

Corals have more developed muscles in their bodies than hydrops. The myofibrils in the dermatomyocytes of the hydra no longer exist, but are produced by the endoderm to produce independent muscle bundles. Distributed on the diaphragm or in the medium glue layer. Well-developed bundles of muscles allow the body to lengthen or shorten, as well as retract the tentacles back into the stomach cavity.

The longitudinal muscle bundles on the septum of the octachal coral are all arranged in the ventral direction, and the circumferential muscles of the body wall also occur from the endoderm. It is especially developed at the mouth plate.

The neural structure of corals is also the plexus that forms the epithelial plexus and the gastric layer, but it has more bipolar neurons and synaptic conduction, so the response is faster than that of hydras.

There are no special senses. Corals are mostly dioecious. The gonads are located on the diaphragm, forming a long band between the longitudinal muscle tract and the diaphragm filament, and the germ cells are derived from the mesocytes of the endoderm, but generally point to the diaphragm as infertile.

In the case of hermaphroditic species, the male is usually protandry to avoid homogeneous fertilization. Germ cells are excreted outside the body, fertilized in seawater, or fertilized in the stomach cavity. During development, it passes through the floating larvae and then develops into adults.

Red corals grow in tropical and subtropical regions near and around the equator at temperatures above 20°C. In calm and clear reefs, platforms, slopes and cliff faces, and crevices at depths of 20-200 meters.

Temperature is a limiting factor affecting the growth of reef-building corals, only the annual average temperature of seawater is not lower than 20 °C, the coral can build reefs, and the optimal temperature range is 22~28 °C.

It mainly lives in shallow waters, continental shelves and around islands, and its vertical distribution is limited to 60 meters, and it grows best at a depth of about 30 meters.

Because the shallow sea area is the penetrating layer of sunlight, which is conducive to the photosynthesis of symbiotic algae in the coral, the shallow sea area provides a rich food source and sufficient oxygen for the corals due to the tidal action, wind and waves, and sea vibration, and is easy to remove metabolites.

Red corals live in cleaner seawater, and if too much terrestrial material pollutes the seawater, it will inhibit the normal physiological processes such as feeding and respiration, that is, they need to live in the standard salinity range, that is, 35g of salt per liter of seawater, and the terrestrial material in the polluted seawater will also reduce the salinity of the seawater.

The habitat conditions required for the growth of red corals require hard bottom, rapid flow, no sediment (especially no terrestrial sediment), clear water, low light, low temperature (8~20 °C), of which the optimal temperature of the Mediterranean red coral field is 10 °C.

Red coral grows slowly, has a long lifespan, and matures sexually 10~12 years after larval attachment, and lays eggs every summer, and its floating larvae are negative phototaxis. Since red coral is longer than other invertebrates, its slower growth rate and lower adult mortality are inevitable trends.

Red coral is also a very famous gemstone, red coral is an organic gemstone, the color is pleasant, the texture is beautiful, such red coral is grown in the deep sea 100 to 2000 meters away from humans. Along with pearls and amber, it is listed as one of the three major organic gemstones, and is also listed as one of the seven treasures in the Oriental Buddhist scriptures, and has been regarded as a rich and auspicious thing since ancient times.

Natural red coral is made up of polyps, which grow very slowly and are not renewable, while red coral only grows in the three major straits (Taiwan Strait, Japan Strait, and Baltic Strait), which is limited by the sea area, so red coral is extremely precious. Jewelry made of red coral is very popular with collectors, and the value of fine red coral is very rapid, and it is valued by collectors.

The English name for coral is Coral, which comes from Latin. The ancient Romans believed that coral had the functions of preventing disasters, giving wisdom, stopping bleeding and repelling heat.

In ancient China, red coral was regarded as an auspicious and happy thing, representing noble power, so it was also called "Ruibao", a symbol of happiness and eternity. The famous coral connoisseur said over the weekend: "Coral, the spirit of the sea." ”

The Indians believed: "Precious coral is the mother of the earth." "The Emperor of Japan also regarded red coral as the quintessence of his country. From the perspective of ancient and modern Chinese and foreign history, red coral has a lofty status. The hats and pearls worn by the second-rank officials of the Qing Dynasty were made of precious red coral, and the Tibetan lamas and monks mostly held prayer beads made of red coral.

Nowadays, the number of precious red corals is scarce and hard to come by, especially coral trees that are more than two feet tall. Nowadays, the importance of corals is also being recognized.

Due to its rarity and non-renewable nature, coral is highly collectible. Natural red coral jewelry is more popular with people.

Red coral culture has a long history in China, India, and Indian traditional culture, especially the Indian indigenous peoples and Chinese Tibetan and other nomadic peoples are more fond of red coral, and even use red coral as a sustenance for self-protection and prayer for the blessing of "God (Emperor)".

According to historical records, the use of red coral by humans dates back to ancient Roman times. The ancient Romans believed that coral had the function of preventing disasters, giving wisdom, stopping bleeding and driving away heat, and some navigators believed that wearing red coral could prevent lightning and hurricanes, make the wind and waves calm, and make the journey safe!

As a result, the Romans called it "red gold", which gave the red coral a mysterious color. Modern Westerners rank coral as one of the three major organic gemstones, along with pearls and amber, and are one of the "March birthstones" in the West.

There are many types of corals, ranging from white, light pink or dark corals, to rosé corals, and black corals (i.e., sea trees) can be found in Hawaii. Among them, red, blue and black corals are the most prized.

Taking red coral as an example, there is a saying that "thousand-year-old coral is ten thousand years red". Red coral is valuable for its slow growth, long lifespan, firm quality, bright color, and scarce production.

In the mid-16th century, the red coral trade on the Mediterranean coast flourished, resulting in the creation of many masterpieces of red coral art. In today's world, the annual harvest of red coral is between 100 and 400 tons, and its price is several times or even dozens of times that of gold.

In many auctions, the prices for red coral works are also prohibitively high. When coral is made into a beautiful ornament or carved into a famous work of art, its value is doubled.

The best red coral necklaces are worth thousands of yuan, and the highest can reach tens of thousands of yuan. In particular, some excellent and precious corals produced in the Treasure Island Strait of our country are unique national treasures possessed by our country.

Now Liu Jingjing sees that it is red coral, and this piece of red coral is not only a little bit, but a whole large piece, according to Liu Jingjing's estimate, the range of this red coral is definitely about a kilometer, and these red corals are all red, and even a little black.

Such a red, blackened red coral is a real top red coral, and the price on the market is beyond imagination! (To be continued......