The fauna of the Mariana trench
Modern humanity has only explored 5% of the ocean floor, so it is hard to imagine what mysteries he can store. What's going on there, no sunlight; which the inhabitants…

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The construction of the reservoir in the country
Water is the source of life on Earth. This expression applies to the whole planet, and to small areas. Life in the city impossible to imagine without a visit to…

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Sharks: The story of a bookplate

Ten years ago, on the island of Sipadan in Malaysia, I took a picture of my first shark. It was almost certainly a shark-Zebra, Stegostoma fasciatum. The current was carrying us along sheer walls, and she, mysterious and beautiful, gleamed in the distance. My heart jumped to somewhere in the Adam’s Apple, I quickly raised the camera and took this blurry picture.

Shark-Zebra

The shark disappeared into the depths, and I got a new hobby — a passion for cartilaginous fish. Have devoted a considerably long time, wrote some articles , even led a couple of sections in Wikipedia. Traveled to different corners of the planet to dive with them.

Of all the sharks I liked Fox, or as she is known in English, thresher. She is like a shark-Zebra with long tail and harmless disposition. Graceful, smooth and swift. Without the aura of celebrity, without the reputation of a ruthless killer. So to speak, a humble toiler of the ocean depths.

Thresher shark (Alopias vulpinus, Thresher shark). Illustration from the book “A field guid to the sharks of the world” Continue reading

Why are sharks afraid of dolphins?

Shark is considered the most terrible in their bloodlust marine predator. But it is justice. Such an enemy sharks are dolphins. Why was the shark afraid Dolphin, although their size sometimes exceeds them?

There is a theory that because the shark flees at the sight of a Dolphin that is trying to save his life. Dolphins live in packs, and many testimony and research have their own mind, yet incomprehensible to the people. If they don’t bother people, but on the contrary always help them, it does not mean that soft dolphins are harmless creatures. They are perfectly able, to defend and attack. Dolphins at high speed, beat the shark with its nose in its belly or in the gills . this is the most vulnerable place of the predator. But great speed and a powerful blow to the nose of the Dolphin can be deadly for sharks. At the sight of aggressive sharks attack dolphins and beat it until it is destroyed. If the shark in time will be able to escape, you will not lose a life. This war sharks with dolphins is observed quite often, and the shark is not attempt attacks on people, no matter how hungry, if there are dolphins. Tell you that there have been instances when dolphins to death zabolevanii-nosed porpoises. And it’s not in hunger, dolphins are not by nature bloodthirsty. Continue reading

Ornamental pond


Make the pond at the dacha with his hands can any modern inhabitant of the metropolis. And this does not need to resort to heavy construction equipment. The material describes how to make a pond on the site with the help of finished plastic containers and plastic film. Before making a pond in the garden need to carefully plan its development, and bookmarks.

How to make a pond from a film on a plot in the garden?
With the flexible coating to really bring to life most daring idea, maybe only slightly adjust its size in accordance with the actual width of the roll of film or butyl rubber, so there were no big scraps, because the cost of these materials is quite high. We offer you to learn how to make a pond with his own hands using locally available materials.

When choosing a location, before you make a garden pond with your hands, make sure that most of specific points of the plot it looked great, but on its surface one could see an interesting reflection not only of clouds, but the house and plants. Continue reading