Can some fish live without water? Detailed answer

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Can some fish live without water? Detailed answer

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Can some fish live without water?

In the body of fish, all the processes characteristic of animals take place, and it has all the necessary organs for this. People often ask, for example, if fish have a heart, if they can hear, if they have a smell.

Fish have a stomach, intestines, nervous system, they can experience pain and discomfort. They have a very keen sense of touch, and they feel the taste with all their skin. They possess odorous organs and they have inner ears.

As we already know, fish breathe with the help of gills, through which water constantly passes. But there are also fish that can spend enough time without water.

A very interesting flying fish. She swims rapidly, moving her tail very vigorously. Then it spreads its fins and jumps out of the water at speed. It can fly hundreds of meters above the water.

An even more unusual fish is the climbing perch. He lives in the Far East. Individual individuals are from 8 to 20 cm long. They can crawl ashore with the help of moving scales that cover the gills. They cling to the ground with it. By pushing its tail and fins, perch can "walk" on the ground! In addition, they can be found in trees at a height of about 1,5 m. The gills of these amazing creatures are so adapted that they can breathe air for some time.

The mud skipper is a fish that looks somewhat like a tadpole. With the help of its front fins, it can jump on the ground and climb trees. One of the species of fish living in Africa has developed lungs so that they can live without water. During the dry period, they burrow into the silt, turning themselves into a cocoon, and can spend the whole summer without water.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What is the main cause of death after a shipwreck?

According to statistics, hundreds of thousands of people become victims of maritime disasters every year, while a third of them - those who, it would seem, have already escaped - are in a boat or on a raft. These people die, as a rule, within the first three days after the shipwreck, when the lack of food or drink cannot yet affect.

Many cases are known when there was no shortage of provisions at all, but people on life rafts and boats still died. For example, just 2 hours after the death of the Titanic, rescuers arrived in time to find both dead and dying people in the boats. Psychophysiologists believe that the main cause of death after a shipwreck is panic fear. The one who has lost hope, who is overcome by despair, perishes. The victim's metabolism and all physiological processes are sharply disturbed, paralysis of the vasomotor nerve fibers occurs.

The mechanism of such a death seems to be similar to that characteristic of the so-called voodoo death, known among a number of tribes in Africa, Australia and New Guinea. The natives of these regions, having learned that a special kind of curse has been imposed on them, fall into a panic, which is soon replaced by despair, apathy and ends in death.

Ultimately, psychophysiologists say, everything depends on the person himself - on his internal preparedness for the situation, on the way of actions and thoughts. People who are confident in their abilities, in friends, in their country, in the fact that they will be searched for and will certainly be saved, as well as believers who are convinced that God will not let them perish, have more chances to wait for rescuers alive.

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Grandpa's diet affects grandchildren 03.03.2003

Overeating grandparents may be ruining the health of their grandchildren. In any case, this is the conclusion of a study conducted by Swedish scientists.

Gunnar Kaati and his collaborators collected the medical histories of 300 Swedes born between 1890 and 1920 and compared these data with information about the harvest collected in the country during their childhood (from this information one can judge how they ate in childhood). And then they studied the health of their grandchildren. It turned out that the grandchildren of well-nourished grandparents were four times more likely to develop diabetes than the grandchildren of those whose childhood was relatively hungry. In addition, they are more likely to develop heart disease.

The reason for this relationship is unclear. According to all the laws of genetics, the peculiarities of the life path of grandparents cannot affect future grandchildren. Hunger or satiety in the genes are not deposited.

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