Whale information, hurry up. The knowledge of whales, hurry up, hurry up。。。。。。。。

Whales belong to the phylum Chordates, subphylum vertebrates, mammals, and eumatria, which contain about 98 species of viviparous mammals living in oceans and rivers. There are more than 30 species in China's waters. All species of cetaceans inhabit the ocean, with the exception of a few that live in freshwater [1].

The definition of whale itself is vague, and the cetacean order can include all cetaceans, as well as specific families of cetaceans. All dolphins are also included in the cetacean order. Cetaceans are mainly divided into two suborders:

Baleen whales (mysticeti) and toothed whales (odontoceti). Baleen whales are small but huge, with the smallest known species being over 6 meters long, and the largest animal, the blue whale, is also a baleen whale. However, the size of toothed cetaceans varies greatly, with the smallest species only about 30 cm in length and the largest sperm whale more than 20 meters long.

Whales are not fish. Whales belong to the class of mammals.

Scientific name in Chinese. Whale.

Latin scientific name. cetacea

Nickname. whale

World. Animal kingdom.

Door. Chordata of the phylum Chordates

Whales are mammals and are the largest animals in the ocean.

Whales have large bodies with small eyes, horizontal fins on their tails, breathe with their lungs, and can reach maximum body lengths.

Domestic, minimal.

Rice. Currently, the largest known whales are about.

ton weight, the smallest.

Kg. There are many species of whales, all over the world.

The rest of the species are available in the waters of our country.

Many. Seed. There are two main types of whales, one is called baleen whales, which have barbelen in their mouths and no teeth, called baleen whales, and have two nostrils, such as long whiskers.

Whales, blue whales, humpback whales, gray whales, etc., are relatively mild and generally eat microorganisms, plankton, and molluscs.

and small shrimp and small fish as food; The other type is called toothed whale, which has teeth and beards, and has a nostril, which can emit ultrasonic waves, such as sperm whales, narwhals, killer whales, etc., and are more ferocious and generally toothed whales, sharks, squid, sea beasts, and big fish feed on them. Thing.

Whales are found in all the world's oceans. It is an aquatic mammal that breathes with its lungs, and its species are divided into two categories, baleen cetaceans, toothless, baleen and two nostrils, like fin whales, blue whales, humpback whales, gray whales, etc.; Toothed cetaceans, toothed, without baleen and with one nostril, like sperm whales, narwhals, killer whales, etc. The vast majority of oxygen in the ocean and 60% of the oxygen in the atmosphere is produced by phytoplankton.

Baleen whales, on the other hand, can destroy zooplankton, the archalist of phytoplankton. In addition, toothed whales also help to maintain the ecological balance of the fish. The food of toothed whales is large mollusks that feed on fish.

Therefore, if there are no whales in the world, humanity will perish.

Whales are singers.

The outstanding "singer" in the water should push the "humpback whale". In 1971, American biologists analyzed the vocalizations of "humpback whales" found from the sea and found extremely special sound signals. It turns out that these "humpback whales" emit a series of beautiful and melodious sounds with different tunes.

These sounds lasted for 30 minutes, and then they were sung from the beginning, judging by the degree of melodiousness and lightness, comparable to the singing of birds. French biologists once recorded the "chorus" of hundreds of "humpback whales" in Bermuda at night. There are thousands of sounds out of the whale, including tactful trills, sharp squeaks, roars, buzzes, and squeaks, much like a group of elementary school students who are reviewing their homework loudly and reciting.

The "chorus" is a comparison of the songs sung by a whale over the years, and it is also found that all whales in the same year sing the same song, and the next year is a new one. Every year, when the whale returns to its starting point, it sings the song it sang in the area last year and then changes to a new song. In addition, even though they are far apart, the songs sung by whales in the Bermuda Islands in the Atlantic Ocean and the whales in the Hawaiian Islands in the Pacific Ocean may sound different at first, but a closer look reveals that the structure and changes of the songs are the same.

For example, the songs have 6 themes and have exactly the same sections. The whales in these two places certainly don't come into contact, but the fact that they sing to such the same tune shows that they have an equivalent set of rules within them.

Whales don't get lost in the seas.

Whales never get lost when they swim the sea, because they have a special ability to have more than 100 million tiny cells in their minds that emit ultrasound waves and receive them to orient themselves. They can also use this ultrasound to notify other whales to call for help or run away together in times of distress. This ultrasound can help them swim in the sea without getting lost, and they can also call for help in time.

The various uses of whales are very beneficial to people, and now that a large number of whales are dying, human beings are also going to extinction, and we need to protect cetaceans and let them continue to live and reproduce. Let people make more advanced instruments according to their benefits, whales are friends of humans.

Whales are mammals and are the largest animals in the ocean.

The common characteristic of cetaceans is that they have a constant body temperature.

Whales, aquatic mammals, breathe with lungs, the largest mammal in the world, not fish; It is divided into baleen whales, killer whales, pseudo-killer whales, and humpback whales. Whales live in the oceans and evolved from land. It is found in the world's oceans.

At present, the largest whale is known to have been accurately recorded to weigh about 190 tons, but based on previous slaughter records, it is inferred that it reached more than 400 tons.

The head is large, the eyes are small, and the pinna is completely degenerated; The neck is not obvious; The forelimbs are fin-shaped, and the hindlimbs are completely vestigial; Most species have fins on their dorsal backs; The tail is horizontally finned and is the main locomotor organ; toothed or edentulous; Nostrils one or two sedan sedan cherry brothers, long on the top of the head; hairy on the side of the mouth (a few hairless); **There is a thick layer of fat underneath that keeps the body warm and reduces the specific gravity of the body. Breathe with your lungs, inhale at the surface of the water and dive into the water, where you can dive for 10 minutes and 2 hours. It generally feeds on plankton, molluscs, and fish.

Viviparous, usually one son per litter, feeds the calves with milk. The body temperature is constant, about about the same.

Young Chung Hung calves have teeth during the embryonic period, but baleen cetaceans' teeth are replaced by beards at birth, and teeth of toothed cetaceans are retained for life.

Whales are mammals that are less reproductive. It's not a fish, it's a mammal.

At present, there are 13 whales in the world, including killer whales, crowing whales, fin whales, blue whales, humpback whales, gray whales, sperm whales, narwhals, razor whales, blue whales, right whales, minke whales, etc. Among them, the blue whale is the largest mammalian in the world. Whales can live up to 100 years to 300 years.

1. Whale fat can be used as soap and high-grade lubricating oil.

2. After the substance spit out or discharges by the sperm whale after being washed by the sea water for hundreds of years, it will have an extremely fragrant aroma, which is ambergris.

3. Whale meat can be eaten, supplemented with protein, and has high nutritional value.

4. Whale skin can be used as leather shoes.

5. Whales can refine oil.

6. Whale meat can be made into man-made fibers.

7. Blublem can be used to make candles and oil paints.

1. The whale is the largest mammal in the world, and its size is huge, why is the sperm whale called the "diving champion"?

This is related to its long-term survival mode and environment, the sperm whale eats squid, octopus and other cephalopods in the deep sea, so it has to burrow into the deep seabed. Over the course of its long life, its right nostril closes, and the tubes inside expand into a lung-like cavity that stores air, expanding the capacity of the lungs, allowing the sperm whale to absorb enough air at the surface of the sea to breathe underwater. Whales can inhale and exhale 500 liters of air in a second or two, and the air exchanged each time is more than six times higher than that of land beasts, and the myoglobin in the muscles of sea beasts such as sperm whales breathes particularly much, more than eight times more than land beasts, and more than eight times more than land beasts, which greatly increases the reserve of oxygen.

Usually, sea beasts such as sea lions and walruses can only dive to a depth of a few tens of meters, while sperm whales can dive more than a kilometer below the surface of the sea. If you don't believe me, I'll give you a few examples!

On August 14, 1955, a sperm whale was found on the Elena Peninsula in Ecuador, South America, when the whale was stuck in a submarine cable at a depth of 1,130 meters, and the pressure on its body in such a deep sea water should be 120 kilograms per square centimeter, before that, in 1840, there was a record of sperm whales hit by harpoons diving to a depth of 1,180 meters. In 1969, a sperm whale was able to swim to the surface after 1:52 p.m., and after it was killed, a small shark that had been swallowed just an hour earlier was found in its belly, and according to analysis, this shark only lives at a depth of 3,192 meters. It can be seen that sperm whales can dive to a depth of 3,000 meters in the ocean.

2. (1) Why did the whale commit suicide by jumping ashore? Biologists have been searching for an answer to this question for a long time. Of all marine life, only cetaceans have this phenomenon.

There is a hypothesis that cetaceans have gregarious emotions. A large group of whales jumped to shore with the lead whale in the picture. But why did the lead whale decide to jump ashore?

I don't know. It was also observed that when a large group was divided into several small groups, they jumped onto the shore in separate groups.

However, recent studies have overturned the above hypotheses and speculations, and scientists have confirmed in a study of a large number of dead whales that most of the causes of whale death are the rupture of the whale's heart and the disruption of blood circulation and kidney function. In all cases, whales are in a very stressful state of mind when there is an unexpected change in the direction of the water or when they encounter other adverse conditions. When they can't fight the Whitewater, the Whitewater eventually pushes them to the shore.

From the above two problems, it can be seen that the whale's life is very happy, but there are still problems that can make it fatal, and it can be seen from here that human science and technology are not advanced enough, and it has not yet reached the method of being able to get rid of animal diseases. Therefore, if human beings want to prevent animals from disappearing from the earth, they must develop science, and at the same time develop science, they must protect nature, so that human beings can always be the "masters" of the earth.