Explanatory text about crabs

1. Explanatory article about crabs: "Eight feet, holding a drum, two scissors dancing in front of the drum, born wild and overbearing, often foaming at the mouth." What is this? That's right, it's crabs.

Crab is blue and has a pair of small flexible eyes. As long as there is any movement nearby, its eyes will shrink back in a hurry. It has a pair of huge pliers, swinging freely in the air, as if it could crush the hardest iron into a ball of mud with a little force.

Crabs like to walk sideways. Because their pliers and feet are connected to the head and chest, they can't bend freely, and the joints of their feet can only bend down and move left and right, so they can only move to one side. Crab has a very hard shell, which can protect it from infringement, but when the crab grows up, its shell will not grow with its body, so after a period of time, the crab must take off its old shell before its body can continue to grow.

Crabs are generally eaten in two ways: steamed or spicy. Steamed crabs are very fresh and tender, and there is an unspeakable fragrance inside. You can dip it in soy sauce. It's spicy. It's crisp and a little spicy.

After listening to my introduction, you must have a new understanding of crabs.

2. Who can explain "Introduction to Crabs" to me? Crab is a common name for crab. Also known as Pang.

Crabs are crustaceans. Their bodies are protected by hard shells. Taxonomically, crabs are the same kind of animals as shrimps, lobsters and hermit crabs. Most kinds of crabs live in or near the sea. Of course, some crabs live in fresh water or land.

Crabs breathe with their gills.

Common crabs are hairy crabs (commonly known as river crabs and hairy crabs), blue crabs and swimming crabs.

They rely on the mother crab to give birth to small crabs, and every time the mother crab will lay a large number of eggs, the number can reach more than one million. After these eggs hatch in the abdomen of the mother crab, the larvae can leave the mother and float around with the coastal current. After molting several times, it grows into a big-eyed larva, and after molting several times, it grows into a young crab. The appearance of a young crab is almost the same as that of an adult crab, and it becomes a crab after molting several times. Most sea crabs are directly discharged into the sea without hatching after their eggs mature.

The hard carapace of crabs can protect crabs from natural enemies, but the carapace will not expand with the growth of the body. Therefore, the growth of crabs is intermittent, that is, after a period of time, the body will continue to grow after the old shell falls off. The largest crab on the earth is the spider crab, with a foot width of 3.7 meters, and the smallest crab is the bean crab, with a diameter of less than half a centimeter.

Although the crab is small, it covers everything. After removing the hard shell of the crab, we can find that the body part of the crab is protected by a shell. These shield-like shells are called crustaceans by biologists. Crabs are symmetrical and can be divided into forehead area, eye area, heart area, liver area, stomach area, intestine area and gill area. The two sides of a crab are connected by appendages. The appendages of the head are called tentacles, which have the functions of touch and smell. Some appendages have the function of mouth, which is used to tear food and send it into the mouth.

Crab chest has five pairs of appendages, which are called chest feet. A pair of appendages at the front end are equipped with powerful claws, which can be used for foraging. The other four pairs of appendages are crab feet. Crabs rely on these four pairs of appendages to walk and move. The way they walk is unique and interesting, and most of them walk sideways rather than straight. Except monks and crabs, they all walk straight.

Crabs spend most of their time looking for food. They are not picky eaters and eat whatever their claws can catch. Small fish and shrimp are their favorite, but some crabs eat seaweed and even animal carcasses or plants.

Crabs eat other animals, and other animals may eat crabs. For example, humans regard crabs as delicious food. And waterfowl eat crabs! Some fish like to eat crab feet as much as humans. When young crabs and underage crabs float in the sea in groups, they may be devoured by other marine life, so crabs have to lay a lot of eggs when laying eggs.

Fiddler crabs are common crabs on the seashore. Why is it called fiddler crab? Because these crabs are waving their big paws, just like they are waving in the tide. That's how they got the name "Zhao Chao". In addition, the giant claws of male fiddler crabs seem to play the violin, so they are also called fiddler crabs or piano crabs.

3. A 450-word composition about crabs

Eight feet, holding the drum, two scissors dancing in front of the drum, born with arrogance and singing. (Shooting animals), congratulations, you got it right! This is a crab. Today, I made an observation on it.

A crab looks like an enlarged spider, but it has two more legs than a spider. It wears a suit of tan armor to defend against natural enemies. The oblate body has four legs on each side, and each leg has four parts. There is a pair of striking clips in front. These two guys are like iron tongs. They are good guys for attack and self-defense, and they are also necessary weapons for home travel. There are also a pair of small eyes the size of soybeans on that armor, which are sneaky. Turn the crab over and look at its abdomen, then squeeze it. Male tip, female circle.

In addition, the crab's living habits have three characteristics.

First, crabs are rampant, spitting bubbles while climbing. Although their bodies are smaller than my slap. In fact, they climbed up like runaway wild horses and disappeared in an instant.

Second, it is fierce. It doesn't behave for a moment, especially when eating. It's even more fierce, like someone wants to use it to grab food. If you touch its back at this time, it will hold you tightly and you can't get rid of it.

Third, it's hungry, and it won't starve to death for ten and a half days. I remember that during the Spring Festival, our family of three went home for the New Year. A week later, we came home, thinking that the crab was dead and ready to "collect the body" for it. But after entering the door, the crab was safe and sound, waving pliers and doing morning exercises leisurely. How hungry it is!

This is my crab, a male and a female!

My grandmother bought four crabs from the market yesterday. I caught them one by one in a glass jar and observed them. Crab has a pair of clever little eyes and can turn around like an electric fan. Their eight feet are overbearing and have shells. They look strong. They are swinging two big pliers in the jar, waving them at will, listening to the words "click, click" as usual, and crabs are very aggressive. You see, they walked forward waving their feet, walked up to each other, and raised their big pliers at each other. After a period of fighting, they quieted down again and began to play games. They arranged for a crab to squat in the middle, and then other companions jumped over. The smaller crab is a little scared, afraid of falling and stepping on his companion. At the urging of his companions, he vomited. As a result, they are upside down. After playing the game, they started fighting again. Their eyes stared at each other, and then they turned each other over hard. Of course, the winning crab was very proud and waved his pliers to show off everywhere. I think: Do crabs watch too many kung fu movies starring Jackie Chan? Crabs also like to "stack arhats" and climb on each other's backs, layer by layer. What's more interesting is that the crab crawling on it, while stepping on the crab shell below, hooks it on the edge of the jar with pliers. Looks like it's trying to escape! I was busy using a ballpoint pen, and Lohan turned over and they dispersed again ... After getting up this morning, I found a crab missing from the jar. I guess it escaped through "Luohan", so I quickly looked around and found it quietly hiding under the table. I carefully threw this "deserter" into the jar and covered the paper box, which was reassuring. If I am not careful, it will be safe.

When it comes to eating hairy crabs, it's definitely seasonal enjoyment. Li Bai, a poet in the Tang Dynasty, once praised: "Crab claws are golden liquid, and bad mountains are Penglai.

And you have to drink on the platform next to the moon and get as drunk as a fiddler. "It is understood that the price of hairy crabs this year is slightly lower than last year. How can gourmets miss this wonderful opportunity? As the saying goes: "The autumn wind starts, the crab feet itch, the navel is round in September, and the navel is pointed in October. "

Its "round" and "sharp" refer to the navel (bottom) of the crab. Crab crab's umbilical cord is round with horizontal stripes. Mother crabs will be eaten in September, when there is much meat. In October, the male crab will eat. At this point, the umbilical cord of Xiong crab crab is sharp and the paste is firm. So, how to eat the best hairy crabs? What's the point of picking hairy crabs? Let us answer them for you one by one.

Many ways to eat hairy crabs Steaming hairy crabs is the most classic practice of hairy crabs. This practice mainly highlights the original flavor of crabs and can maximize the color, fragrance and taste of hairy crabs. The waiter of Pearl River Spring Hotel brought the steamed crabs to the table. Hairy crabs are orange, fresh, sweet and delicious.

Open the bottom cover and peel off the crab's back together, and the golden cream on the crab's back will be displayed in front of you. Carefully peel off the cream, pour the vinegar, put it in your mouth, savor it carefully and chew it slowly. It's really "crab meat tastes tasteless on the table." Fried crab with salt and pepper is very suitable for drinking.

Cut fresh and clean crabs into pieces, soak them in onion, ginger and cooking wine for a few minutes, drag the powder into an oil pan and fry until golden, and add tofu, ginger, onion, salt and soy sauce to taste. When eating, the best wine is yellow wine, among which carved flowers are the best.

Can also be accompanied by a glass of cold beer, exquisite modern flavor hairy crabs. The crab soup with mustard is first boiled with hairy crabs, and then this seasonal vegetable with local characteristics is soaked in crab soup. Crispy mustard also has a fresh taste.

This practice is relatively light, and it is more appropriate to eat after tasting all kinds of hairy crabs before. Huaiyang crab rice is covered with a layer of orange crabs, which sets off the orange crabs and looks very attractive.

Pick out crab meat and crab paste, add chopped green onion and mix well with crab and rice. Hot rice is orange red. Chew it carefully in your mouth, and every grain of rice has a faint crab flavor.

The chef said that it is best to put the crabs in the refrigerator for half an hour when steaming, so that the crabs will not move when steaming, and the steamed crab roe will not come loose. However, to make Huaiyang crab rice, it is necessary to make the crabs move, steam the crabs with the rice and let the crab juice seep into the rice.

The dish of dried crab wings with crab powder is made of hairy crabs and golden hooked wings. Orange crab roe, white tender crab meat, transparent shark fin, bright color, delicious fragrance, unique flavor and excellent appearance.

Red and yellow, full and golden color reveals attractive umami. Taste it, the crab and the wings "smell like fish", and the rich fragrance goes straight to the five internal organs. At this time, plus the excellent chicken soup cooked by Dongjiang secret recipe. Three kinds of delicious food are fresh and tender, and people can't help but want to add another one.

Yipin crab bag This is Dongxing Shun's signature snack. The surface of the crab bag is dotted with orange crabs, glittering and translucent, like stamens. When you can't wait to pick up a piece and put it in your mouth, the meat of hairy crabs is mixed with the fragrance of crab paste, crab roe and cuttlefish gum, which is very delicious.

Hubei, known as the "province of thousands of lakes", has been a famous "land of plenty" in the Yangtze River basin since ancient times. The hairy crabs in this area are fresh and tender. Generally, three or two hairy crabs are the best, slightly smaller than those produced in Yangcheng Lake. In the laver restaurant, the reporter found this hairy crab that was airlifted from Hubei to Yangcheng.

The hairy crabs made in Hubei are spicy enough, and the chopsticks have not been moved, which makes people feel spicy. Open the shell of the hairy crab forcibly, and gently pour the golden crab paste into the tip of the tongue with a spoon. The fresh taste goes straight to the throat. Because this river fresh hairy crab is based on the production method of spicy crab, it tastes delicious.

Frozen drunken crab with yellow wine This is made by soaking hairy crabs with yellow wine. The aroma of wine and the umami taste of crabs complement each other. Eating drunken crabs requires two important ingredients-ginger tea and vinegar.

Because hairy crabs are cold, ginger tea is usually used to warm the stomach after eating. Pay attention to the order of the parts when eating crabs, and eat the crab shell last, because the essence of crab paste is in the shell. If you eat the meat of crab feet first, its delicacy will be greatly reduced, so the best one should be eaten last.

After seeing so many cooking methods, should I try them? Don't worry, whether you can buy fresh crabs with delicious meat is a key step ~ Please see the next page (see five things when choosing hairy crabs): Choosing hairy crabs depends on the bright, shiny, dark green and generally thick crab shells; Yellow, mostly fine; It's best to choose "golden hair and golden claws". Look at the navel navel protruding, generally all fat cream: concave, mostly lack of fat.

When you hold the crab with your hands, you still have to feel "heavy" enough, so that you can pick the kind of hairy crabs that are greasy and full of crab meat. Look at the crab's claws, and the "foot hair" on the crab's feet is tufted, which is generally fat and healthy; Hairless, mostly soft fat.

As the saying goes, "female crabs are picked in August in the lunar calendar, and male crabs are selected after September." Because after September of the lunar calendar, male crabs have good gonad maturity and the best taste and nutrition.

Generally, the belly button is round and female, and the navel tip is male. If you look at vitality, turn the crab around and turn it back quickly with a crab's foot bomb, which shows that you have strong vitality; Irreversible vitality is poor and cannot be preserved for a long time.

It can also be observed through its "rampage" that all the goods that leave the ground when crawling are good goods. Of course, its crab feet are tied, so it is not included.

However, you can also tell whether crabs are sensitive. If you touch its eyes with your hands or branches, their eyes will blink flexibly, react quickly, or "foam at the mouth", which is still strong enough and fresh enough. When eating crabs, the following four things contain a lot of bacteria and dirt, which must be removed.

Except for the gills, the sides of the crab are shaped like eyebrows and arranged in strips; In addition to the stomach, it is located in the first half of the crab bone, close to the crab yellow, shaped like a triangular packet; In addition to the heart, it is located in the middle of crab yellow or crab oil, close to the stomach, hexagonal, and difficult to identify; In addition to the intestine, it is located in the middle of the navel of the crab and is strip-shaped. Answer (2) There are many ways to eat hairy crabs.

Compared with the popularity of spicy crabs, steamed crabs can be said to have lived in rivers and lakes for a long time and have a long history. Because people taste crabs mainly for their delicious taste.

6. Crabs constitute a stream not far from my home, and crabs are hidden under the rocks at the bottom of the river.

When there is no homework, my classmates and I go to the stream to catch crabs. I lifted a big stone and saw a nest of crabs, large and small, running sideways in a panic.

However, the dark brown "real armor" supported by eight legs seems a bit stupid. I reached out my hands and caught the biggest one. No, this crab waved a pair of pliers and gave me a hard pincer.

I endured the pain and quickly threw it into an empty test tube I brought. After returning home, I put them in a cuboid glass jar and observe them several times after school every day.

The crab has a hard shell on its back, and there are several almost invisible white patterns in the center of the shell. Let me have a closer look, ha! Like the kind face of an old man.

There are three sharp forks on both sides of the shell, just like the small flag inserted on the back of a military commander in Beijing opera, which looks so imposing. Under the big shell, in addition to a thigh on each side, four calves are extended, each leg is divided into four stacks, and the last stack is like a small iron hook.

The crab's tongs are really powerful. The two clamps are open, just like two vises. There are a row of small, pointed teeth like dog teeth up and down the "jaw", and there are black hairs on the big clip! Crabs are very aggressive. They are dancing in a glass jar with big pliers and flying up and down in the water, imposing.

That kind of air is not like a "prisoner" in a jar, but like a victorious general. They seemed unwilling to be lonely, and two crabs actually fought.

Before the "war", they rolled their round eyes and pushed each other viciously. When they meet, they are clamped with pliers, kicked around with eight feet, and the mouth like a small door spits out strings of white foam, which goes in and out, tumbling up and down, and the fighting is fierce.

The old crab caught another crab with his pliers and carapace. The overturned crab's belly is facing the sky, several legs are "scratching" on it, waving big pliers feebly and finally turning over and pouncing on the big crab: The more I look at it, the more interesting it becomes, and I think: Are they learning to fight, too? Crabs are so energetic! Usually it runs wild in the fish tank, and the small fish in the fish tank never play with it, always hiding far away.

I often let pebbles roll left and right. Once I mistakenly thought it was someone knocking at the door! The crab grabbed the fish tank with its powerful pliers, probably trying to break it and escape! Crabs bring me endless happiness, and I really like them.

7. Cute little crab composition [Cute little crab composition] Cute little crab This Sunday, I was at my grandmother's house. One sunny morning, my friend Xie Lei and I rode our bikes to a very shallow stream. I saw a small crab by the water. I said, "Xie Lei, can you help me catch it?" ? He agreed, took off his shoes and grabbed them as soon as he grabbed them. I'm glad to see it. We go home by bike. When we got home, my father had already picked me up by car. I put down my bike, took two fresh-keeping bags, filled them with some water, and put the little crab in them to go home by car. When I got home, I put it in a useless goldfish bowl, packed my bag and went to school. Before going to school, I said to my mother, "Mom! The composition of the second grade of primary school is "Lovely Little Crab Composition". " My little crab has a brown back and a white belly. It is a male. Go to grandma's house to catch mother next time. As soon as I get home on Friday, I will sit in front of the TV according to my previous habit. This time, it's completely different. I went to the goldfish bowl to see the little crabs. When I came to the fish tank, I found my mother, one by one.

Finally, I found it in the corner of a table and caught it with a fish tank. This is my lovely little crab, who has tried to escape many times. Lovely little crab composition 400 words for primary school students (/).

8. Description about crabs: I went back to my hometown a few days ago. There is a stream behind the village, and crabs are always hidden under the rocks at the bottom of the stream.

My sister and I went to catch crabs happily. The water in the stream is crystal clear and you can see the stones at the bottom of the stream.

I lifted a big stone and saw a nest of crabs, large and small, scattered around in panic. Although they escaped with a full posture, the dark brown "real armor" on their backs seemed awkward. I picked up the stick next to me, filled the empty jar with half a jar of water, threw the crabs in, and soon caught eight.

Watch slowly. Through the observation these days, I found that crabs are very aggressive. A crab fidgeted in an empty wine can for a while. It swings up and down in the water with big pliers, imposing. It is not like a "prisoner" in a "cell", but like a "general" who returns in triumph.

It was cute to stir up trouble, and the other one was not to be outdone, so he started fighting. A deadly battle began, only to see two crabs bulging with big round eyes, viciously approaching each other.

As soon as you touch it, clamp it with pliers and kick it around. The small door-shaped mouth spits out strings of white bubbles, and there is a fierce struggle when entering and retreating. The old crab propped up another crab with his pliers and carapace.

The upside-down crab's belly is upside down, and its eight claws are scratching around in the water, constantly waving big pliers. I turned it upside down with a small stick, only to see it attack the big crab again. Are they practicing boxing? For a while I snorted and stared, but soon I'll be back together. Sometimes, they stay alone in one place, and no one touches anyone; Sometimes, trouble-making crabs will move this and that, causing a tear war.

Look! What an interesting crab! You also leave a few to observe! Or this? The delicacy of crabs must be fresh in the memory of many people after eating them, but it should be noted that dead crabs are toxic and eating them by mistake may cause food poisoning. In autumn, my mother said to me, "Chrysanthemum flowers and crab fat are the best time for people to taste crabs."

Crab is a precious aquatic product with tender meat and delicious taste. "Crabs are also rich in nutrition. The content of protein is several times higher than that of pork and fish, and the content of calcium, phosphorus and vitamin A is also very high.

Autumn crab is delicious and nutritious, but if eaten improperly, it may cause health damage! "It is safest to eat boiled crabs! Because crabs grow in rivers and lakes and like to eat small organisms, aquatic plants and decaying animals, the body surface, gills and gastrointestinal tract of crabs are covered with pathogenic microorganisms such as bacteria and viruses. If you eat, pickle or drink crabs raw, you may be infected with a chronic parasitic disease called paragonimiasis.

Therefore, I advise everyone to eat boiled crabs. We still have a question-why do crabs walk sideways? First, the earth's magnetic field says that crabs rely on the earth's magnetic field to judge their direction.

In the long years after the formation of the earth, the geomagnetic north and south poles reversed many times. Many creatures are at a loss and even become extinct because of the reverse transfer of the earth's magnetic poles.

Crab is an ancient migratory animal. Its inner ear has a small directional magnet, which is very sensitive to geomagnetism. Due to the reversal of the geomagnetic field, the small magnet in the crab lost its original direction.

In order to survive the reversal of the geomagnetic field, the crab adopts the practice of "changing with the constant", simply walking sideways without advancing or retreating. 2. From the biological point of view, the crab's head and chest are indistinguishable in appearance, so it is called head and chest.

The feet of this animal grow on both sides of the body. The first pair of pliers are not only tools for digging holes, but also weapons for defense and attack.

The other four pairs are used for walking, called walking feet. Each foot consists of seven joints, and the joints can only move up and down.

The chest width of most crabs is greater than the length, so when crawling, they can only bend their feet at one side, scratch the ground with their toes, and extend their feet at the other side. When the toes reach the distant ground, they begin to contract, while the originally bent feet immediately straighten and push the body to the opposite side. Because these pairs of feet are different in length, the crab actually walks forward.

However, not all crabs can only run wild. For example, monks with long wrists and crabs who live in groups on the beach can run forward.

Many spider crabs that live in seaweed can also climb vertically on seaweed. Crabs spend most of their time looking for food. They are not picky eaters and eat whatever their claws can catch.

Small fish and shrimp are their favorite, but some crabs eat seaweed and even animal carcasses or plants. Crabs eat other animals, and other animals may eat crabs. For example, humans regard crabs as delicious food.

And waterfowl eat crabs! Some fish like to eat crab feet as much as humans. When young crabs and underage crabs float in the sea in groups, they may be devoured by other marine life, so crabs have to lay a lot of eggs when laying eggs.

Fiddler crabs are common crabs on the seashore. Why is it called fiddler crab? Because these crabs wave their claws as if they were waving in the tide, that's how they got the name "Zhao Chao". In addition, the giant claws of male fiddler crabs seem to play the violin, so they are also called fiddler crabs or fiddler crabs.