Who has whale information, be specific.

1. Introduction.

Whales are divided into two categories, one is baleen whales and the other is toothed whales. 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 but a few species of whales live in freshwater, and all but a few inhabit the ocean.

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 do not belong to the class of fish, but to the class of mammals.

2. Materials. Cetaceans are completely aquatic mammals, and some rely mainly on echolocation to find food and avoid enemies. They generally feed on mollusks, fish, and zooplankton, and some species can also prey on seals, fur seals, etc.

Every once in a while, it is necessary to ventilate. Generally, in winter, they swim from the high-latitude cold-water area to the low-latitude hot water area to give birth, and in summer, they swim back to the high-latitude cold-water area from the low-latitude to hunt.

The size of the giant whales in the ocean varies greatly, from small whales measuring only about 1 meter in length to the largest being more than 30 meters. Most of them live in the ocean, and only a few species inhabit the freshwater environment, and their body shape is very similar to that of fish, and their body shape is streamlined, suitable for swimming, so they are commonly known as whales, but this similarity is just a convergence phenomenon in biological evolution. Because cetaceans have the characteristics of viviparity, lactation, constant temperature and respiration with lungs, they are completely different from fish, so they belong to mammals.

The largest whale weighs 160,000 kilograms.

Whale is the common name of cetaceans among marine mammals, and is divided into toothed cetaceans and baleen cetaceans, and the cetaceans include the dolphin family under the cetaceans.

Whales live in the ocean. Whales have a thick layer of fat under their skin, known as whale oil, which keeps the whale warm and can also store energy for emergencies. Because the whale has many special structures in its body that allow it to hold its breath and slow down its heart rate in the water for a long time, when it sinks to the bottom of the sea, it always takes a long time before it resurfaces.

In addition to having a structure to store oxygen, when a certain part of the body needs a large amount of blood**, there will be a special function of concentration ** in the body.

In 60-70 years, the blue whale is the largest, and the killer whale is the most ferocious.

General introduction to whales:

Whales are giant creatures in the ocean, mammals in the same orbit as dolphins, (but larger in size than dolphins, with a shorter muzzle, evolved forelimbs in the shape of flat fins, vestigial hind limbs, shell fins, a broad, flat tail, and a stomat.) Upper cetaceans (suborder and baleen whale and extinct ancient cetagna) – Baleen whales and extinct ancient cetaceans, and cetaceans that cannot be classified in the family Dolphins.

It is widely distributed, and its traces can be seen in the sea areas of the world, which is oceanic, and the behavior takes more group activities, and rarely acts alone. Like dolphins, they like to have fun when foraging, such as jumping and hitting the waves, whale tail lifting, whale tail hitting the waves, and snorkeling.

Types of whales: There are about 12 species of whales that inhabit the Southern Ocean: baleen cetaceans and toothed cetaceans. Larger baleen whales include blue whales, finwhales, blackboard baleen whales, bridle whales, gibbon whales, and right whales. Larger toothed whales include sperm whales and orcas, among others.

The largest of these is the blue whale and the most numerous are the finwhales. Gibbon whales and right whales are now almost wiped out, with few survivors.

Whales are widely distributed in the Southern Ocean, and they can be found almost south of the Antarctic convergence zone. Their distribution is closely related to the distribution of krill colonies. Blue whales are mainly distributed in the ice floe zone, and the southernmost ones are gibbon whales and blackboard baleen whales, the gilbby whale can winter in Antarctic waters, and the right whale is mainly distributed in the subantarctic region; Toothed cetaceans are found in the Antarctic convergence zone and migrate with the seasons.

Whale Habits:

Fin whales are accustomed to living alone, and in the same sea area, males and females coexist. Male fin whales can also use their "songs" to attract female fin whales hundreds of kilometers away to their well-fed breeding grounds to mate with male fin whales. Because the whale's "song" frequency is similar to that of some military or commercial sonars, sonar is likely to interfere with fin whale reproduction, making the already low reproduction rate of this species even more difficult.

The horned whale, with a white belly and a black back mixed with blue-gray or black-gray spotted patterns, has a horn about 1 2 meters long on its head, which is actually teeth, and most people currently believe that the horned whale's tusks are just a sign of secondary sexual characteristics, which resembles the mane on the head of a male lion on land. (Habits to be examined).

Whales were originally thought to be animals that walked on all fours on land, but later "went to the sea" due to foraging problems, and practiced monogamy, like "bigfin whales" usually live alone, while other whales also live in groups. Their gestation period is generally about 12 months, one litter and one son, and the lactation period of young whales is 10 months, and the lifespan is about 60 to 70 years.

Whales migrate in certain waters in the cold zone and warm generation, and have a fixed return route. In the summer, they live in the cold zone and replenish their nutrients, and in the fall, they begin to move to the warm sea for breeding.

Whales eat mysis shrimp, squid, fish, etc., while killer whales eat penguins, seals, dolphins, whales, etc., and especially like to eat whales' tongues. Killer whales in the wild have a fierce temperament, but they can be tamed from a young age and have a high IQ that can be used for performances.

Whales are divided into two main groups, baleen whales and toothed whales.

The following is what I received, and the author described the whale in a human tone, hehe, take a look.

Hey, my children, don't think that we whales are fish, if you do, then you are very wrong, we whales are mammals. In addition, I would like to reveal a little secret to those who think I am a fish: I should be a good meditation supplement to supplement the biological "nutrition", hahahaha!

Our whales are very big animals, and a small tongue alone weighs as much as a dozen big fat pigs! If we open our mouths, you humans will stand in our mouths and raise your hands and not touch the roof of our mouths; Four people sat around a table and sat in our mouths, and it looked very spacious! Hmph, look how big we are!

Oh, by the way, let me tell you, don't say this to my ancestors, it knows, you have to criticize me!

We have a lot of family members, but each has its own habits. See, the first one to appear is our little brother year-old potato, the baleen whale, who has no teeth, so his diet is small fish and small shrimp; The second one to appear is my sibling, whose name is naturally I don't say you know, by the way, it's called toothed whales, and they have extremely sharp teeth, so we generally eat big fish and sea beasts; That one is our leader, the killer whale, he is very powerful, if you provoke him, he will be reckless!

We whales breathe with our lungs. When you exhale, you have to float to the surface, and the exhaled air forms a column of water. But different species of whales spew different columns of water

The water column of the little brother baleen whale is vertical, thin and tall; The water column of our toothed whale is sloping, thick and short. Look, we still have a lot of knowledge about cetaceans!

The way we slept was also fun. To be on the safe side, we always slept in groups with our heads facing in and tails facing outwards in a circle.

We were viviparous and grew up drinking the milk of our mothers. We grow very fast, we can grow 30 kg - 50 kg in a day. And we have a long lifespan, we can live for decades - a hundred years.

After listening to my own statement, everyone will know something about our whales! If you come to us in the future, I will definitely welcome you!