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Black sea – description.

In the late 17th century Peter the great, meaning “to be firmly on the Azov and Black seas”, has a boatload of “Fortress” to explore the shores of the Black sea. Sailors measured the depth and made sketches of the coastline. Thus was made the first Russian map of the Black sea. Although, according to historians, the geography of the Black sea was well known to the ancient Greeks. They laid here the trade routes and built beautiful cities.

The black sea is an inland sea, belonging to the basin of the Atlantic ocean. With the ocean this body of water through the channels sequentially connects the Marmara, Aegean and Mediterranean seas. Over the Atlantic, and originate those cyclones, which bring the black bad weather. Through the narrow Straits hindered the water exchange between the seas and so the tides on the black sea coast is virtually invisible. Only occur under the action of strong winds and wind-effected processes can raise or lower the water level 30 cm On the North-East of the shallow Kerch Strait links the Black sea with the sea of Azov.

The radiant variety of its shades from blue to emerald-blue sea in all languages of the world is called “black”. The sea on the map resemble an oval, stretching from West to East on the 1150 km and from North to South nearly 580 km Severskoe location between the extreme southern point of the Crimea and the Turkish coast, which are separated by only 228 km maximum depth of 2210 m. the sea Continue reading

Question and answer on the care and maintenance.

The key to a healthy aquarium – the right choice of its inhabitants and care for them. This will be devoted to several topics, including how to choose and set up an aquarium, what should be the soil, plants and more. When buying aquarium fish it is important to remember the fact that, as you would not like the diversity of sizes and colors, to accommodate in one “room” best fish of the same species or closely related. Before purchasing, carefully review the alleged habits of the Pets, not that your chosen species eat each other

It turns out that our aquarium fish are not so simple. The first fish appeared about 300 million years ago – it was one of the first vertebrates. Fish, the most ancient group of vertebrates. The variety of fish amazing – in a class of fish includes about twenty thousand species, but in aquariums, mostly inhabited by bony fish. It’s not any special selection, but the fact that almost all modern fish can be attributed to that unit.

Breeding fish to start, of course, with the selection of the aquarium. At the moment on sale you can find containers made of plastic or glass. In operation they are quite equal, so each of them has its pros and cons.For example, the aquarium glass is not scratched during cleaning, but glass is easy beats, and as a result of long contact with water on the glass, a layer of lye. Plastic aquarium safer from two points of view: first, it does not break, and secondly, the risk that caviar is fish in it will die, tends to zero. However, plastic aquarium hard to clean, because one wrong move scraper can cause unsightly scratches, which will ruin the entire experience. Continue reading

The most dangerous creatures living in the seas and oceans.

Despite the fact that the man himself is a predator by nature,

in the ocean, there are many sea creatures

which pose a danger to humans

The most dangerous creatures pose a threat to humans ,

are Sharks.

Sharks still pretty much in the ocean, and some sharks pose a deadly risk to humans.

First place, the danger room one 1: are Sharks.

Piranha. In second place, and in South America and perhaps in the first place

piranhas pose a high risk to humans.

One piranha can bite and even maim people

A school of Piranha can devour everything that is alive, a dog, a cow, a man has fallen into the water.

In South America hang these warning signs. Continue reading

Fish species bred in ponds
Carp is a domesticated form of carp, bred by a long selection work. From wild carp the carp is a more efficient use of feed, and in this regard, and…

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The threat of the black sea hydrobionts
Toxicity is a universal and widespread phenomenon in nature. Many inhabitants of the seas and oceans have become toxic in the process of their continuous development and adaptation to the…

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How to escape from sharks
Over the past 20 years shark attacks have occurred four times, the document says. "The attack is isolated, and therefore subject to control. To ensure the safety of tourists, the…

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