Lovely pictures — animals and children

Lovely pictures — animals and children


Interesting facts about wild animals

Penguin — fun, unique creature. In addition, it is the only bird in the world, able to swim, but not able to fly, of all modern birds penguins move only «standing». But of particular interest is their ability to survive in one of the harshest places on Earth — Antarctica. The average annual temperature in the region of the South Pole just -49.3 degrees Celsius, and the record low -89 degrees. Add to this the wind speed which sometimes reaches 100 m / s and get an environment in which, apparently, is simply not possible to survive.
However, the entire coastal part of the continent inhabited by huge emperor penguins and Adelie penguins. Most of these birds spend the life in the sea, sometimes sinking up to five hundred meters into the icy water, which did not penetrate even the sun’s rays.
Nature took care of their survival, providing a unique mechanism of thermoregulation. Keep warm in such harsh conditions, the penguin makes the fatty layer thickness of 3 cm, on which there are three layers of waterproof feathers, evenly covering the whole body of a bird.
Such a «suit» protected from getting wet, moreover, the air between the feathers can store heat in the water, and blown to the outdoor space.
Of particular note is the only heat in the exposed parts of the body of penguins — feet. Amazing! Lacking sufficient protection, the birds legs do not freeze, allowing to stand for hours in the cold, or to swim in the icy water. Frost saves them reduce heat loss: hot arterial blood in the legs penguins its heat to counter the flow of venous blood and thus cools. This effect is achieved thanks to an unusually close mutual arrangement of arteries and veins, and is called the principle of reverse outflow.
The temperature of the Antarctic penguin feet are usually about 4 degrees, which contributes not only to the preservation of the heat, but also allows you to move freely on the ice. But surely warm feet would melt ice and frozen into it.


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Interesting facts,

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