
A Whale is mammal and it was known already in antiquity. Whales breathe through lungs, they are warm-blooded, feed the calves milk from the mammary glands.
The whales and all cetaceans are likely to have the terrestrial ancestors. In the evolution, animals first emerged from the water, and then returned there. It happened about 50 million years ago.
Perhaps the ancient whales gave birth on land. In the period 2000-2004 in the mountains of Pakistan have been found fossilized remains of a pregnant female and male whale.
The blood of the whale is able to absorb more oxygen than the blood of terrestrial mammals.
Scientists believe that the front fins of whale - no other than the altered paw.
The female whale calves are hatching 11 months, babies are born a length of about 7.5 meters and weighing 2-3 tons, with a whale egg size does not exceed the mouse oocyte.
Approximately seven months shorthead fed mother's milk, daily drinking about 380 liters. By this age whales grow to 16 meters in length and weigh 23 tons.
Top-most
Whales - the largest, longest (up to 33 meters), the heaviest (150 tons), the loudest, most enduring mammals.
The whales have the biggest brain
The largest whale, and accordingly, the largest mammal of the planet - blue whale. And a female blue whale is always larger than male.
On a tongue of a blue whale, which weighs up to 4 tons, can fit about 50 people. The heart of a blue whale is of size of a small car weighs 600-700 kg and diameter of vessels with a bucket pumps about 8 thousand liters of blood. For 1 second blue whale breathes approximately 2 thousand liters of air, just as in the light of this giant can accommodate up to 14 cubic meters of air.
Whales can not sleep for three months, not eating for eight, not breathing for up to two hours and at the same time overcome the huge distances up to several thousand kilometers.
Every adult blue whale consumes about a million calories. The menu includes some animal tonne of krill - small crustaceans. General, whales eat small fish, cuttle fish and plankton. They can swallow large fish and, once in the stomach of a 16-meter whale was found two 3-meter shark.

They are special
Eye of the large whale weighs about a kilogram. Very small, adapted for life in the sea of eyes capable of withstanding high pressure by immersing the animal to a greater depth of the tear ducts are allocated big fat tears to help more clearly seen in the water and protect the eyes from exposure to salt.

In whales there are no external ears, they hear the lower jaw. From the sound of it is in a special cavity in the middle and inner ear.
Whales are always listening, because they do not have poorly developed sense of smell and sight. The sound gives the whales to navigate, communicate with each other and eat, although the exact purpose of the sounds produced by whales have not yet been elucidated.
The whales are suffering from noise in the oceans, which coming from people.
White - the most "talkative" representatives of cetaceans, because of the diversity of published beluga whale sounds, they are often called "sea canaries."
Tails of whales individual as fingerprints in humans. Slits and grooves, scars, spots of brown algae on the tails of whales create unique images.
Big and helpless
Decision of the International Whale Commission in 1986, was established World Day of whales, when a ban was placed on the whale fishery.
Whales killed, including for baleen - horny plates on the upper jaw toothless whales. With the help of the baleen (up to 800 pieces in one whale) animals sift the water, filtering out their main food - plankton. At corset Baroque required about a kilogram of whalebone.
In the production of expensive perfume as a scent release using a unique substance amber. This costs up to $ 300 per kilogram and with unpleasant smell. Ambergris is formed in the intestines of sperm whales - how and why, is unknown. Sometimes whales pours out whole swathes of amber, then it can be found on the shore, but most amber is extracted from killed sperm whales. The pieces can weigh from a few grams to 400 kg.
Now it is only allowed aboriginal whaling exclusively for the needs of indigenous people, as well as the removal of whales for scientific purposes by special permission of the Government member of ICC.