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
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
In honor of the coming of the pores of the holidays we offer to your attention a selection of interesting facts about the Black sea.
The first mention of the Black sea are found in documents relating to the V century BC. It is on the Black sea, Jason and the Argonauts went to Colchis for the Golden fleece.
1. The ancient Greek name of the sea — Pont Aksinsky (gr. Ἄξενος Πόντος), meaning “Inhospitable sea”. It is assumed that the sea was named so because of difficulties with navigation. Later, after a successful exploration of the coast by Greek colonists, the sea became known as the Pontus Euxinus (gr. Εὔξενος Πόντος, “Hospitable sea”). Romanian Black sea Marea Neagră is called.
2. A characteristic feature of the Black sea is complete (except some bacteria) absence of life at depths greater than 150-200 m. the fact that the deep layers of the Black sea is saturated with hydrogen sulphide.
3. In the scheme of currents of the Black sea there are two huge closed cycle with a wavelength of 350-400 km In honor of oceanographer Nikolai Knipovich, who first described this scheme, it was called the “Glasses of the Knipovich” Continue reading