5 most amazing marine life
1. The Humboldt Squid. The size of this predatory marine life can exceed 2 meters. Inhabits squid off the coast of Central America at a depth of 700 meters. The…

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Do all fish spawn?
Most fish lay eggs, and it is fertilized outside of their body. Fish that spawn, are called oviparous. But some fish give birth to live fry. Such fish are called…

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Mediterranean sea on the brink of ecological disaster
No one doubts that the Mediterranean sea is one of the most beautiful seas of our planet! Anyone who has ever been lucky enough to see the fabulous beauty of…

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reason

How fish breathes?

Hundreds of thousands of years ago, long before the appearance on Earth of man, the oceans already swam fish. At that time they were the most highly developed creatures.

Since then, they began to develop a variety of ways so that now only some species only vaguely resemble the first primitive ocean fishes.

As a rule, fish has an elongated and tapering shape. People have copied it in the construction of ships and submarines, as it is the best adapted to movement in water.

Most fish use their tail as a motor. With the help of fins and they control their movements. Except for one species of fish, all the others breathe by means of gills. Fish swallows mouth water that passes through the gills and out through the hole. Water also contains oxygen, and it through the gills into the blood of fish, as the air through the lungs in the blood of man. Continue reading

Herring

Typical representatives of the nekton is the herring. It is well known that this fish has great commercial value. Until comparatively recently, it was promyshlyali in such large quantities that its price was very low, despite excellent taste and nutritional quality. In recent years, due to the sharp increase of the fishing fleet and introduction of intensive methods of production occurred overfishing. The number of herring in the oceans have decreased dramatically.

If in the future the intensity of the herring fishery will increase or even remain at current levels in the coming years, this valuable food fish will become a Museum rarity. Reduction of stocks of herring and concerned consumers and fishermen, but the first sounded the alarm scientists.

The appearance of the herring is well known to everyone, but it is unlikely that the layman can easily distinguish one kind of herring from another: the difference between them for the untrained eye to be insignificant. Species differences are not only in the details of the structure and the size of the fish, much deeper than they differ from each other in biology, numbers, distribution. Therefore, the fishery for mackerel fishes should be strictly subordinated to scientific data, to each type needs special approach. Continue reading

Dangerous for human inhabitants of the red sea

Going on vacation to Egypt, it should be remembered that in the Red sea is home to many dangerous species of fish and shellfish and that your vacation turned into a nightmare, it is necessary to observe elementary safety rules.

One of the biggest predators – shark in the Red sea about thirty species. As a rule, sharks don’t attack people for no reason, not approaching the coast, but accidents still happen.

Very poisonous mollusk, the cone, seeing him, do not rush to grab hands. The venom of this marine life causes an immediate paralysis of the limbs, can occur stop breathing and anaphylactic shock. According to statistics, every third bite of the cone is lethal.

Starfish. Are about the size of one meter. It is beautiful, they have at their ends are sharp spikes. If you accidentally step on star, get a sharp prick and burning sensation. Continue reading

Amazon com the Arkhangelsk province
Fishermen in the Arkhangelsk region took out a strange catch in the area of ferry crossing Bereznik and aspen: they pulled from the water an unusual fish with the head…

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Preparations for the care of water in the garden pond
Algae is a natural part of any body of water, including garden ponds. As one of the most important parts of the food chain, they are the basis of life…

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