The largest mammal on earth, without a doubt, is the blue whale. Another large representative of the deep sea to date could not be found. The blue whale is impressive in its size. Its length is almost 34 meters, and its weight is more than 200 tons.
However, the largest whale in the world is not only huge body size. He has just incredibly large internal organs. And only one language weighs so much that it is difficult to imagine: 4 thousand kilograms. Well, the heart of a blue whale weighs about 700 kilograms. However, such impressive dimensions for the ocean are not uncommon. Few people know that back in 1870, near the shores of North America, they found the largest jellyfish. Medusa Tsianeya in length was more than 35 meters. To visualize its size, you can compare it with the height of a 9-storey building.
3 ton babyWhen a small whale is born (or, more precisely, water), it already weighs about three tons. The length of the cub is comparable to a small tree - 6-7 meters. For a person, it is already unimaginable dimensions, it is difficult to imagine a living creature of similar dimensions.Every year, whales only grow, and a small whale pulls at high speed. At the same time, according to various sources, whales can live up to a hundred years. However, despite the active growth and longevity, whales produce very slowly. Females of the largest whale in the world reach sexual maturity by only ten years, and they give birth no more than once every two years. Mammals, unlike humans, bear fetus for about 12 months. Despite such circumstances, now powerful and noble mammals are destroyed mercilessly.
Initially, the number of blue whales (this is before the start of intensive fishing) was estimated at 215 thousand individuals. But modern livestock count is quite difficult. And the reason is pretty simple.For many decades, this mammal has not been studied very actively. Under the data for 1984, no more than 1,900 whales live in the Northern Hemisphere, and more than 10,000 live in the South. True, half of them are dwarf subspecies. Now, according to some information, there are no more than 2 thousand blue whales in the entire world ocean. True, according to estimates of other specialists, the figures are more optimistic - at least 8 thousand individuals.
Killer Whale VictimHowever, blue whales can die not only from human hands. The mammal can also become a victim of its marine neighbors. One would think that in adult whales, because of their gigantic size, there are no natural enemies. However, they may still fall under the favor of killer whales. The latter gather in flocks, tear blue whales and eat. And cases of attacks have already been reported. So, in 1979, a flock of 30 killer whales attacked a young blue whale.
Gray blueThe color of the blue whale, surprisingly, is not blue, but mostly gray, but with a blue tint. And they called the blue mammal because when you look at the whale through the water, but it seems to be blue, or blue. At the same time, the fins and belly of the animal are lighter than the rest of the body.
Blue whales live in warm and cold waters. These are the polar and tropical seas. The creatures do not have teeth, but despite this, they feed on any small marine life, for example, plankton or a small fish. The largest whale in the world has a “whalebone” for food. This is a device that looks more like a brush or a huge sieve. It is able to pass through elements that are unnecessary for powering, and besides, filter out water. A blue whale cannot eat a person, even if it so desires. Therefore, the mammal is considered almost safe for humans. However, a dweller of the seas and oceans can easily turn over a medium-sized boat, and not by accident, but simply by accident.
Almost bipedThere is a theory that whales descend from land. In proof of this - the structural features of the skeleton of a mammal, which is not very similar to fish. Blue whales even have finger tassels on their fins.Moreover, the blue whale does not lay eggs and spawn, it produces already living organisms.
The blue whale, as a rule, does not form herds. But sometimes mammals are still grouped together, but they are few, only 2-3 heads. Only where there is a lot of food, you can find large clusters. However, even in such groups, blue whales are kept apart from each other.