The body color pattern of killer whales is mainly composed of two contrasting colors: black and white. The white area on the ventral surface of the body extends from the lower jaw to the anus, narrows between the all-black pectoral fins, and branches behind the navel. The ventral surface of the caudal fin is also white. Both the back and body are black, but there are white patches on the lateral abdomen near the reproductive fissure, and there are also obvious oval white spots obliquely behind the eyes. There is a gray saddle behind the dorsal fin.
Be distributed
Black whales are widely distributed in the waters around the world, and there seems to be no obvious limitation of water temperature, water depth and other factors. They have a high habitat density in high latitudes, especially in the sea areas with rich prey. Their movement is generally related to chasing prey or increasing predation rate, usually in the spawning season of fish and the production period of seals. In summer, killer whales in the Atlantic mostly live on the edge of ice floes or in waterways with ice floes, and feed on baleen whales, penguins and seals. Where and how far they will migrate is still inconclusive. Some killer whales stay in Antarctic waters all the year round, while killer whales in the Arctic rarely get close to ice floes. According to killer whale researchers in Washington State and British Columbia, there are two types of killer whales in the area: permanent and short-lived, which can be found all year round. Some people have a wide range of activities. According to the results of photo identification in various places, some killer whales range from Alaska to Southern California.
strange hobby
Black whales often use their tail fins or pectoral fins to jump, surf, peep or beat the water. Black whales can swim at a speed of 55 kilometers per hour and hold their breath for about 17 minutes. When the surrounding air is cool, you can usually see their low altitude and dendritic jets. Their reactions to ships are varied, which may be indifferent or full of curiosity. Occasionally, the group will run aground, and sometimes the group will be trapped in tidal pools or bays. In Arctic and Antarctic waters, the ice floes generated by the wind are a big problem for killer whales, sometimes forcing them to stay in narrow open waters for a long time.
Killer whales settled in Washington State and British Columbia, their basic social unit is a small matriarchal group, generally consisting of 2 to 9 killer whales with similar blood. This matriarchal group will remain stable for a long time, and all members seem to share the parenting work. Several such groups will form a "pod" (usually used to describe a group of whales with social behavior). A typical pod usually includes adult and juvenile killer whales and young whales, most of which are led by the oldest female whale, while the male whale staying in the pod is usually the offspring of the female whale. Settled small groups have a special way of greeting other small groups: they form two close columns face to face at a distance, and then the members of the two small groups will mix together, as if to show their social status.
Eating habits
Black whales eat a variety of foods, from small fish and squid to large baleen whales and sperm whales, which may become their prey; Other flippers, such as seals, turtles, sea otters, manatees, dugong, sharks, raccoons, and even deer and elk, seem to be waiting for their prey when swimming through the waterway. Every group seems to have their own food preferences. For example, some groups mainly feed on fish such as salmon, tuna or herring, and some groups patrol the landing sites of pteropods to find prey, or follow migrating whales, just like wolves chasing reindeer. Black whales obviously need cooperation to attack and subdue large prey, but they will also work together to concentrate the fish into a big ball and then take turns to get in and feed. Black whales also steal longlines to catch fish caught by fishing boats or eat fish discarded by fishermen. They seem to selectively bite the tongue of baleen whales. Its prey may be deeply influenced by the fear of killer whales. When killer whales appear, pteropods will flee to land or ice, while whales will swim to shallow water or hide in cracks in ice floes.
condition
Black whales are not worried about extinction, but human hunting may lead to a decrease in the number of ethnic groups in some areas. There are only a few hundred killer whales in Washington State and British Columbia. Whether settled or in transit, they are threatened by pollution, heavy ships and the loss of prey. Intensive whale watching activities may interfere with the life of killer whales, and those who want to protect salmon farms from pteropods may expel killer whales from their original preferred habitat. It is estimated that there are about 8,500 killer whales in the tropical waters of the East Pacific, at least 850 in Alaska waters and more than 2,000 off the coast of Japan. In summer, there are about 8,000 killer whales in Antarctic waters, and there may be hundreds to thousands in other areas within the distribution range. At present, whalers in Japan, Indonesia, Greenland and the West Indies continue to kill killer whales. Although the amount of killing is not large, it may have a considerable impact on local ethnic groups.
Its body is strong, large, spindle-shaped and smooth. There is a thick layer of fat under the skin to keep the body warm. The body length is about 600- 1000 cm and the weight is 5000-8000 kg. The body color is black and white, the back is painted black, but there is a saddle-shaped gray spot behind the fin, a spindle-shaped white spot behind each eye, and most of the ventral surface is white. The head is round, with no protruding snout, and the nostrils are on the right side of the head, with a flap that can be opened and closed freely. When it floats to the surface of the water, it opens its flaps to breathe, spewing out foam-like aerosol, and when it meets the cold air on the sea surface, it becomes a water column. The forelimbs become a pair of fins, which are very developed, and the hind limbs degenerate and disappear. Powerful triangular dorsal fin, standing high in the center of the back, is very conspicuous. The male beast can reach 1.5 meters in height, which is both an offensive weapon and a rudder. The mouth is very big, and there are 40-50 big conical teeth on the upper and lower jaws, which looks fierce. Black whales are distributed in the oceans of the world, most of which are near the North Pole and South Pole. In China, they are distributed in Bohai Sea, Yellow Sea, East China Sea, South China Sea and Taiwan Province Province Sea. Black whales like to live in cold water at 0℃ to 12- 13℃. There are few in warm oceans, and even if there are, they often dive into deep water with low water temperature. It is very mobile, and it can swim 100 kilometers a day, but it often appears in waters within 30 kilometers from the coast. Swimming is also very fast, with a speed of 54 kilometers per hour. Diving time is also very long, more than 30 minutes at most.
Black whales mainly prey on various marine animals, such as dolphins, sea lions and walruses. Sometimes they prey on squid, cod, squid, mackerel, sardines and other marine fish. Black whales are fierce, and large whales such as right whales, fin whales, humpback whales, gray whales and blue whales in the ocean are also afraid of tigers and hurriedly avoid them. Black whales also use skills when hunting. First of all, they will float motionless on the sea, belly up, much like a dead body. When squid, seabirds and marine animals approach it, they will suddenly turn over and open their mouths to eat them.
Black whales like to live in groups. There are small groups of 2-3 whales and large groups of 40-50 whales. They always stay quietly on the water for 2-3 hours every day. Because their lungs are filled with enough air, they can float safely on the sea surface, exposing their huge dorsal fins. The pectoral fins between group members often keep in touch, showing intimacy and unity. If one member of the group is injured or unconscious in an accident, other members will come to help and support them with their bodies or heads to keep them floating on the sea, even when sleeping. This is to take care of each other and stay awake to some extent.
If humpback whales are "singers" in cetaceans, then killer whales are "language masters" in cetaceans. They can make 62 different sounds, which have different meanings. For example, when catching fish, it will make intermittent "sneezing" sounds, just like the sound made by pulling rusty iron doors and windows. Threatened by this sound, fish will become abnormal. Black whales can not only emit ultrasonic waves to find fish by echo, but also judge the size and swimming direction of fish. This ability is very important for carnivores living in the ocean. The bottom of the sea is very dark, and it is difficult to see distant prey in this environment.
People who travel at sea often describe the killer whale as a fickle siren, fishermen call it a "sea overlord", and movies, plays and other works of art describe it as a "god of revenge", all of which imply that the killer whale is a man-eating animal. In fact, this is entirely human imagination, because although killer whales are fierce gluttonous beasts in the sea, there has never been a record of eating people in history, and even a case of biting people has never been heard of. Strangely, it is not only harmless to human beings, but also friendly. In the aquarium, it can be domesticated, smart and obedient, and it can also learn many skills and perform various programs. The most wonderful program is "Welcome": as the bell rings, the huge head will emerge from the water and slowly swim to the audience to show "welcome", or let the breeder ride around on his back, or even let the breeder put his head in his huge mouth. "Jump into the water to swallow fish": breaking the surface, with his mouth open, jumped to a height of more than 5 meters and swallowed a big fish hanging there; "Jump in the fast swimming": Swim quickly along the edge of the pool, break the waves and sometimes jump out of the water; "Come as soon as you can": Swim over immediately when you hear the call signal; "Cats catch mice": killer whales have their bellies up and their pectoral fins out of the water. The animal trainer sat on his chest, holding his teeth in one hand, and then swam with the killer whale several times and jumped into the water. At this time, the killer whale caught up from behind and carried him on his back again, repeating this action many times. In fact, killer whales have become so docile because people have mastered one of its weaknesses: once they leave their own kind and live alone, their courage becomes very small. Of course, after the wonderful performance, delicious dishes such as salmon and tuna are also essential as rewards.
Black whale: Also known as killer whale, it is 8 ~ 10 meter long and weighs several tons. Its back is black, its abdomen is gray-white, its dorsal fin is bent as long as 1 m, its mouth is slender, its teeth are sharp, its temperament is fierce, it is good at attacking prey, and it is the enemy of penguins and seals. Sometimes it attacks the same kind of baleen whales or sperm whales, and it is the overlord of the ocean.
1862, a man named Eslite found 13 dolphins and 14 seals from the stomach of an orca, so the orca naturally became the executioner. English and Dutch names mean to kill whales. It belongs to the toothed whale, with black and white stripes on its huge body, two oval white spots behind its eyes and a white area protruding backward on its side. The above characteristics can easily distinguish it from other whales.
The black whale is nearly 10 meter long and weighs 7.8 tons. Females are slightly smaller than males. They take the vast blue sea as their home, and all the sea areas are almost everywhere, but the killer whales in Antarctica, offshore Japan and Norway to the North Pole have the largest number. There are more than 20 sharp teeth with a length of 10 ~ 13 cm on the maxilla and mandible of the black whale, which bend inward and backward and stagger up and down, and there is a mouth with sharp teeth exposed, which is eerie. The arrangement and shape of its teeth are not only conducive to tearing and chopping the prey, but also make the captured prey like the things in the bag. Black whales are graceful, streamlined, agile, strong in swimming skills and diverse in patterns. Swim back for a while, roll around for a while, stand upright on the water for a while, swim as you like, and often put your dorsal fin out of the water, just like the halberd of an ancient weapon hanging upside down on the sea, hence the name "killer whale".
Brutal gluttony, minke whales, dolphins, seals, humpback whales, gray whales, white whales, and even the "king" of animals-blue whales are among them. In addition, all kinds of marine animals, such as fish, seabirds and squid, will never be easily let go. Their most common hunting method is group attack. When fishing, they are surrounded by a number of whales, then rush into the fish in turn, have a full meal, and then walk away. For small animals such as fish and blackfly, it is easy to be swallowed, while for large mammals, both sides will fight to the death. When they attack large animals, they usually attack together. For example, someone once witnessed the tragic scene of seven killer whales attacking a minke whale: three strong male killer whales launched a fierce attack on minke whales, one biting its tail, one biting its head and the other attacking from all directions. It took only 45 minutes to kill the minke whale alive, and the other four swarmed and instantly destroyed the minke whale. Sometimes floating motionless on the sea, belly up, suddenly become a zombie. Whenever groups of dolphins or sea lions swim on the sea for food, they often approach without knowing the truth. At this time, killer whales will quickly turn over and catch them in lightning speed.
In the way of reproduction, it belongs to one male and many females, and often consists of a plump adult male whale and several females. The number of females a male whale has depends on its competitiveness, and strong females have more. After mating, conception and pregnancy 1 year, a small whale with a body length of 2.4 meters was born. Young whales feed on the mother whale's milk and grow rapidly. It follows the mother whale all day and can eat independently after 1 year. When the body length exceeds 6 meters, the male whale can reach sexual maturity, and then it begins to courtship and get married. However, because many harem beauties are owned by their fathers, how can they get their hands on them? Therefore, they are often expelled from their homes and live a bachelor's life. Once the time is ripe, it will participate in the struggle for reproductive rights and challenge the whale rulers.
Black whales never take the initiative to attack humans. They are smart and willing to get along with people. With a little training, they can perform various performances, which shows that they have a good memory. However, in addition to the friendly side, there seems to be a strong revenge. An old Eskimo told me a true story: in Barrow, the northernmost town in Alaska, two young Eskimos once shot at a pair of killer whales, but missed, but got revenge. In the following years, as soon as they went out to sea, killer whales would attack them, and several times they almost died, scaring them to old age and never going fishing in the sea again.
Respondent: A203/KOOC-0/630/KOOC-0/6-Grade I/KOOC-0/0-92/KOOC-0/:/KOOC-0/2.
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Respondent: weapons ambassador-rank and rank10-1016: 59.
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Responder: the tank is about to start-guard level 210-1017: 23.
Hello everyone! Do you know me? I tell you, I am a famous whale, famous all over the world. Hey, my little friends, don't think we whales are fish. If you really think so, you are all wet. We whales belong to mammals. In addition, I want to reveal a little secret to those children who think I am a fish: it's time to supplement the biological "nutrition", hahahaha!
We whales are very big animals, and a small tongue alone is as heavy as a dozen big fat pigs! If we open our mouths, you humans will stand in our mouths and raise your hands without touching our maxilla. There are four people sitting around a table in our mouth, which is still very spacious! Well, look how big we are! Oh, by the way, tell you, don't say this to my ancestors. If they know, they will criticize me!
There are many members in our family, but everyone has their own living habits. Look, the first one to appear is our little brother-the baleen whale. He has no teeth, so his food is small fish and shrimp. The second one is my younger brother, whose name is needless to say. By the way, it's called toothed whale, and its teeth are extremely sharp, so we usually eat big fish and marine animals. That's our leader, the killer whale. He is very powerful. If he is angry, he will show disrespect!
We whales breathe with our lungs. When exhaling, it will float on the upper sea surface, and the exhaled air will form a water column. But the water column ejected by different kinds of whales is different: the water column of minke whales is vertical, thin and high; The water column of our toothed whale is inclined, thick and short. Look, we have a lot of knowledge about whales!
The way we sleep is also very fun. For the sake of safety, we always sleep in groups, with our heads inward and our tails outward in a circle.
We were viviparous, and we grew up drinking the mother whale's milk. Our growth rate is very fast, and we can grow 30-50 kilograms a day. And our life span is very long, we can live for decades-one hundred years.
After listening to my self-report, you will know something about our whales! If you come to see us in the future, I will certainly treat you warmly!