The creation in the garden ornamental fish pond
Since this problem of discharge is not simple, its planning should be approached carefully, thoroughly studied the issue. First, we determine which part of the site will be a pond.…

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Kuban som
Almost all the rivers of the Kuban. both in small and in large estuaries inhabited by the biggest fish of the Kuban - Kuban soma ( impressive weight about one…

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How to make a pond for fish farming
There are many ways to create a pond to breed fish at home - as difficult, requiring a lot of physical and material costs, and simple and cheap. Before you…

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Types of jellyfish

Floating jellyfish in the sea often struck by its beauty. Such a wealth of shapes, colors, as among the jellyfish, not to meet many animals! Jellyfish inhabit all seas, and some of these sea animals prefer warm waters of the tropics and subtropics, while others liked the cool Northern parts of the oceans.

Some jellyfish can be found at a depth of 10km, and there are jellyfish that do not leave the coastal strip. It is noteworthy that each type of jellyfish is found only on the territory of the area is an animal does not apply to pandemic, that is common everywhere.

The largest jellyfish is Cyanea arctica – chosen by a cool North sea. The age of lanei can be identified by its colour – older individuals are covered with brown and red spots; the young specimens are painted in an intense orange color.

Medusa majestic and beautiful: the dome of Arctic lanei can be over two meters in diameter. Huge size in combination with blue or pink tentacles in 2-3 dozen metres away – a spectacle Grand and stunning.

Jellyfish in the Black sea, however, can not boast of such colossal parameters. And the color palette is native jellyfish is much poorer – dominated by purple and blue tones. The most common samniashvili – transparent jellyfish, with a bright blue border and a distinct “ears”.

For all the jellyfish inherent radial symmetry – eared transparent jellyfish allow you to personally ensure that all the paired organs of the jellyfish represented in the number of multiples of 4.

Unlike harmless Aureli, Comerota capable of causing harm to humans. A luxuriant mane of the oral tentacles “sea nettle”, also known as this type of jellyfish, causing searing pain. Of course, this terrible killer of fry and small fishes are not able to kill the man, but still when you meet him is better to touch only the upper side of the dome, where there are no stinging cells.

The species of jellyfish, the most dangerous to humans

Chironex fleckeri. Poison “sea wasp” leads to paralysis of the nervous system and death is literally in three minutes after the toxin gets into the body. Fortunately, in the Black sea “sea wasp” are not found, but in Australian waters annually killed several people.

Physalia physalis. Visalia peacefully float on the surface of the water, like boats beautiful blue color. Under water are also poisonous tentacles up to 15-20m – they are a danger to people. The poison affects the nervous system, and the bather simply drown, unable to stay on the water.

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…

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The species of fish.
Since the fish bred in aquariums generations, there was a clear tendency to choose the most colorful animals for breeding. So many of the most popular tropical aquarium fish kept…

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