Why are there no penguins in the Arctic and no white bears in the Antarctic?

Before the Antarctic continent drifted away from other continents, bears had not yet evolved. Penguins, on the other hand, enter the Antarctic continent through Cape Horn in Argentina and then slowly adapt to the Antarctic climate. It should be said that the absence of polar bears in the Antarctic and the absence of penguins in the Arctic just illustrate the serendipity and unrepeatability of evolution.

The Antarctic is an isolated stretch of road, covered entirely with glaciers, while the Arctic is an extension of the Eurasian continent, and the geography of the two is different. The polar bear is a high-level carnivore, in the upper layer of the food chain, there are many low-level animals in the support of it, and the Antarctic is without these low-level animals, even if the polar bear is put in the South Pole, it cannot survive, so there are no bears in Antarctica.

In fact, a long time ago, a species of penguin lived in the Arctic, but now it is extinct. This penguin, known as the "Arctic Great Penguin", is 60 centimeters tall, with a brown head and black feathers on its back, much like a night dress.

Foreign gentleman. They live in Scandinavia, Canada, and the current regions of northern Russia, as well as all.

on islands in the Arctic and subarctic. At its peak, there were millions of them.

About 1,000 years ago, the Vikings spotted the great penguins. From then on, the great penguin's doom came. Especially the 16th century.

Later, the Arctic exploration boom led to the giant penguin being hunted by explorers, navigators and indigenous peoples. For a long time.

The indiscriminate hunting led to the complete extinction of the Arctic great penguins.

The ancestors of penguins living in the Antarctic region today developed south of the equator.

Scientists speculate that the reason why they don't continue their journey north to the Northern Hemisphere may be that penguins can't tolerate the warm waters of the tropics.

The northernmost limit of their range is very much in line with the line of the 20 region of the average annual temperature. Warm equatorial currents and higher.

The temperature forms a natural barrier that prevents the penguins from crossing the equator to the north. They must stay in the snow and ice from Antarctica.

Melted water or colder currents from the deep sea pass through the sea.

This is determined by geography.

The Arctic is close to the Eurasian and North American continents, and many animals can come to the North Pole through the ice in winter, and penguins cannot fly, which is easy to attract natural predators, and the Arctic terrain is more rugged, which is not conducive to penguins' activities on the road; The Antarctic is far away from all continents, has few natural predators, and the terrain is relatively flat, which is suitable for flightless penguins;

Although white bears can swim, they cannot cross the vast oceans, so they can only live in areas not far from their ancestors (bears originated in ancient Eurasia). Even if polar bears are brought to Antarctica, they are not suitable for covert hunting in the endless snowfields, and polar bears are not agile enough to catch fish, so they will not live well in Antarctica. In the Arctic, bears have more prey to hunt and more terrain to hide.

It should be related to plate drift and species evolution. The plates of the Antarctic continent separated from the ancient continent of Gaia very early. Assuming that penguins originated there at that time, even considering the migration of birds, it is currently generally believed to be between several settlements in ancient times.

Therefore, in modern times, penguins can be observed migrating to places such as Australia and Africa, and further north, because penguins have not lived since ancient times (considering the relationship between ocean currents and other things), so there are no penguins. In the same way, polar bears may have been specialized in the north by black bears or brown bears in recent times. Because there are no such bears in the Southern Hemisphere, it is even less likely that Antarctic bears will emerge in the south.

First of all, the temperature in the north and south poles is obviously different, and it will be difficult for them to adapt if they are reversed.

The average temperature in the Arctic is -18

The average temperature in Antarctica is -50

If they change their living environment, it is conceivable that polar bears will die of cold and penguins will die of heat!

It's also normal for different species to live in different places, and Antarctica is not suitable for polar bears because polar bears are carnivores and there is not enough food in Antarctica.

The reason why there are no penguins in the Arctic is because previous poachers killed all the penguins in the Arctic Mountains, and the reason why there are no polar bears in Antarctica is because polar bears can't find enough food in Antarctica to survive.

Because the north and south poles are the two extremes of the earth, they are far apart and cannot migrate, and the temperature of the north and south poles is different, so they may not all be suitable for survival.

There used to be penguins in the Arctic, but they were killed, and the conditions for polar bears in the Antarctic did not exist.

Because the temperature of the North and South Poles is different, it is impossible for the two of them to adapt to each other's temperatures.

Because only the Antarctic is suitable for penguins, while the Arctic is suitable for bears.

Bears are omnivorous, adaptable terrestrial animals that range from the Arctic to the tropics. In the Tertiary period, glaciers formed at the north and south poles due to the cold climate on Earth.

Penguins can't get used to it.

In fact, penguins also existed in the Arctic at the beginning, but they were killed by Europeans, so now only in Antarctica.

Originally, there were penguins in the Arctic, but the Australians loved to explore, and after they went to the North Pole, they killed wantonly, and eventually there were no more penguins in the Arctic.

The South and North Poles are located at opposite ends of the globe and are places with very cold climates and snow and ice all year round. The climate and environmental conditions seem to be very similar, but why is it that penguins live in Antarctica, while the Arctic does not?

To clarify this issue, we need to start from both historical and practical aspects.

Penguins, as we call them, are a large group of birds in the animal taxonomy, they cannot fly, they are adapted to life in the water, and they are all distributed in the southern hemisphere. Scientists believe that penguins evolved 100 million years ago from a species of flying bird that lived in the area of present-day New Zealand. At that time, New Zealand was not as far away from the Antarctic as it is now, so some penguins spread to the Antarctic, forming the common species of Antarctic penguins today.

From a practical point of view, although the environment of Antarctica and North A is similar, the ecological conditions are not the same. Antarctica is a separate continent surrounded by a wide ocean. The climate is cold, with only a few primitive insects and bryophytes growing, so there is a lack of large herbivores, let alone carnivores like polar bears.

Penguins can therefore get enough food in the surrounding seas.

Being far from the mainland also prevents penguins' natural predators from migrating to Antarctica, thus providing penguins with a unique environment to grow and inhabit. Therefore, even if we ignore historical factors and artificially transport penguins to the Arctic, it will be difficult for them to inhabit and reproduce in the Arctic for a long time.

The Arctic and the South Pole are two similar boreal ecosystems on Earth. The representative species of the Arctic is the polar bear, while the representative species of the Antarctic is the penguin. Because of the equator and the vast expanse, there should be a big difference between the species living in the North and South Poles.

Just as polar bears can't travel to the South Pole, penguins don't show up at the North Pole.

However, in recent years, scientists have discovered a surprising fact, that is, more than 200 species of marine life living in the Arctic and Antarctic exist at the same time. This has aroused the curiosity of scientists, what kind of coincidence can make the two extremes of the North and South Poles appear the same species?

Some people believe that some marine creatures have a large living space, and they can adapt to the hot climate of the equator and the cold zone. Unlike terrestrial environments, the temperature difference in the ocean is not large, especially the deeper you go, the smaller the difference in water temperature becomes. This may give some species the possibility of surviving in the North and South Poles at the same time.

They can even cross the equator for a friendly exchange before the Arctic and the North Pole.

It is also believed that the reason why the same species appeared in the North and South Poles is because hundreds of millions of years ago, the creatures of the North and South Poles lived in the same area, and later with the movement of the earth's tectonic plates, they gradually divided into the South Pole and the North Pole. Penguins and polar bears, for example. As for the phenomenon that there are no polar bears in the Antarctic and no penguins in the Arctic, it can be analyzed by the theory of biological evolution.

Let's start with penguins, penguins are an ancient bird, it was born long before the separation of the ancient continents, in fact, there was also a penguin in the Arctic, it is the great puffin, which can't fly like penguins, but due to human hunting, Arctic penguins have disappeared from the face of the earth. So we can think that there are also penguins in the Arctic, but now they have disappeared.

As for polar bears, it's better explained. Biologists have discovered that the polar bear is only 100,000 years old and originally came from the Siberian black bear. Whereas, the Antarctic continent does not have large terrestrial carnivores due to its distance from other landmasses.

It doesn't matter what happens, it's just that there is no chance of a creature like a polar bear in Antarctica.

So, if you put Antarctic penguins in the North Pole, they may still survive, but if you put polar bears in the South Pole, the clumsy Antarctic penguins will be wiped out. Natural evolution is like this, so human beings should not be "whimsical".

Polar bears live in Antarctica, and penguins live in Antarctica. When the Antarctic continent separated from the ocean 60 million years ago, it became a separate continent, and terrestrial bears could not migrate across the ocean to Antarctica.

Because the environment in Antarctica is not suitable for polar bears, there are no polar bears in Antarctica. Because the environment in the Arctic is not suitable for penguins, there are no penguins in the Arctic.

Geographical reasons. Polar bears and penguins cannot migrate to the other side of the planet on their own, so there are no polar bears in the Antarctic and no penguins in the Arctic.