Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

What is flounder? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article Comments on the article

Did you know?

What is a flounder?

Almost all types of flounder are considered very valuable food. European halibut is generally considered one of the most delicious fish. The largest member of the flounder family is the halibut. After it turned out that the liver of this fish has fat with the highest content of vitamin A, and it also contains vitamin D, the halibut began to be specially hunted, and even special vessels were built for catching this particular fish.

But the most important of the commercial flounder fish remains the flounder itself, which lives off the coast of Europe. This fish has a characteristic coloration with red spots. Among more than 500 species of flounders, one can name large flatans, common halibuts, flatfishes, kosorots. They all have a flat, pancake-like body and can lie on the bottom or float on one side while both of their eyes are on top of the other side.

Once upon a time, flounders did not swim and did not lie on their side. They moved in a normal position, but as a result of this they became easy prey for their enemies. That is why, in order to survive, they began to swim and lie on their side, and thousands of years later all flounders became like that.

But there was another problem as well. Lying on one side meant that one eye would remain sunk in the mud and the mouth would remain in a position not too comfortable for eating. So for many thousands of years, these fish have been trying to twist their bottom eye out in order to see. And gradually the eye moved to the top of the head. It looks absolutely incredible that at the present time every flounder fish goes through all the stages of this process. After being born, she goes through all the stages of evolution during her own life - her eye really passes from one side of the head to the other and remains at the end.

Author: Likum A.

 Random interesting fact from the Great Encyclopedia:

How are the fates of Lenin and Kerensky similar?

Alexander Kerensky and Vladimir Ulyanov were born in the same city on the same day - Simbirsk (now Ulyanovsk), on April 22, only with a difference of 11 years. Their families were friends, and their fathers held leadership positions in education. Both trained as lawyers, came into politics and eventually became the first persons of the state: Kerensky headed the Provisional Government from July to October 1917, and Lenin replaced him in this post after the October Revolution.

 Test your knowledge! Did you know...

▪ How did people learn to use scales?

▪ What is Sprain, Tendon Sprain and Bruising?

▪ What links Diogenes' barrel and Pandora's box?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Robot Football Championship 18.11.2000

Australia hosted the 150 League Robotic World Cup with 35 "mechanical" teams from XNUMX countries.

In the main class in the final match, the European champions from Germany lost 0:2 to their rivals from the USA. The German robots were not saved from defeat by either the "quick-firing leg" specially prepared for the tournament, which not only hit the ball faster, but also took corners, nor the forward with the sonorous name of Ronaldo.

Football robots, who contested the championship in the "major league", are cardboard boxes equipped with microelectronics and video cameras. They move at speeds up to 2 meters per second. The game is played on a field the size of a tennis table.

The main feature of these players is autonomy, the independence of their decisions and actions during the match from coaches-engineers, i.e. the presence of the so-called "artificial intelligence".

Other interesting news:

▪ Why you don't want to eat after exercising

▪ Robotic furniture from IKEA

▪ Indium antimonide transistor prototype

▪ folding battery

▪ Iron rain over a hot planet

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Power supplies. Article selection

▪ Brainwash article. Popular expression

▪ article Which postal service delivers valentines with lip prints instead of stamps? Detailed answer

▪ article Black elderberry. Legends, cultivation, methods of application

▪ article We repair the computer power supply. Encyclopedia of radio electronics and electrical engineering

▪ article The Great Jacket Escape. Focus Secret

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024