Knowledge about the sea elephant. Northern sea elephant. Where sea elephants live

The funny nose, resembling an elephant's trunk, has an important purpose - it is an indicator of the maturity and strength of the male, and also warns the "youth" that in front of them is an experienced fighter.
DIMENSIONS. Length: males - 4.9 m, females - 3 m. Male weight - 2,400 kg, females - 680 kg.
REPRODUCTION. Puberty: females - at 3-5 years old, males - at 9-10 years old. Mating season: in September and October. Pregnancy: 11 months. Number of cubs: 1.
LIFESTYLE. Habits: Gather in colonies. Food: Fish and cephalopods. Lifespan: Up to 14 years.
Related TYPES. There are only 2 types of elephant seals: northern and southern. Two species of elephant seals are known, one of which lives in the Southern Hemisphere, and the other in the Northern Hemisphere. In the south, in the Antarctic waters, the southern elephant seal lives, and in the north, off the coast of California and Mexico, its species settled in the north.
REPRODUCTION. male elephant seals come out on land before females to guard their territory. Violent fights take place between them. Males are fierce opponents, often inflicting severe wounds on each other. The female, having gone out on land, gives birth to a cub, born a year before.
The mother feeds him for four weeks and mates again immediately after. Males do not wait until the lactation period is over, and therefore many females are abused by them, while receiving severe injuries. As a result of this behavior of males, about 10 percent of the cubs die. Females face another danger - males await them in the sea, who were expelled from their territories on land by strong rivals.
HABITS. Elephant seals gather on land twice a year - during the mating season and in autumn, during the molt. Hundreds of elephant seals come to the beach in autumn, swim in marshy puddles. Unbearably strong smells spread from them. At this time they are inactive, most of the time they spend lying down. During molting, they cannot enter the water and therefore starve. The top layers of their skin come off with their fur.
FOOD. Elephant seals feed on fish and cephalopods that are caught in the open sea. Recent studies on the coast of California, which measured the depth of immersion of animals, showed that elephant seals are able to dive to a depth of 1,000 m. They feed on marine animals, octopuses and even small sharks. Elephant seals have rather long fangs protruding from the gums by about four centimeters; molars are poorly developed, so they prefer soft-bodied prey that does not require thorough chewing.
DEVICE FEATURES. Pinnipeds evolved from land animals and adapted to life in the water. They are excellent swimmers. They have a thick fatty layer, which helps to keep cold water constant body temperature. During molting and mating fatty layers serve as a source of energy. Pinnipeds move with difficulty on land, but are very mobile in water. During swimming, the hind limbs are used as a rudder, and the front limbs perform rowing movements. On dry land to cool off sea ​​elephants front flippers pour sand on their backs.
Did you know… Male elephant seals are very large. It was difficult to determine their body weight. At the autopsy of a dead elephant, it was found that the skin alone weighed 115 kg, the fat layer - 660 kg, the heart - 42 kg, and the head - 52 kg. The difference in the size of the male and female sea ​​elephant record. This is the most famous difference between the sexes. Elephant seals migrate long distances. A long way elephant seal migration ran in the direction of South Alaska and totaled more than 5,000 km.
Sea Elephant is not at all afraid of a person and does not try to hide when he sees her. Sailors, for example, could sit astride it without fear that the elephant would harm them.
The record holder for the size among elephant seals was a male named Spot, who was kept at the Edinburgh Zoo. It weighed 3 tons, and its length was 4.47 m. The elephant seal has long been hunted for fat. 3 large males can get about 350 liters of fat.
CHARACTERISTIC FEATURES OF SEAL ELEPHANTS. A distinctive feature of an adult male is a leathery pouch located on the upper side of the muzzle, which plays leading role in attracting females during the rut. When the male is excited, his pouch is extended by 28 cm. During the loud roar of animals, he is a resonator for sounds. The female weighs three times less than the male, so during the mating period, a huge and aggressive male poses a serious danger to her.
LIVING PLACE. The southern elephant seal lives in Antarctica and breeds there. The northern elephant seal lives in the western coastal waters South America and breeds in California.
Preservation. AT late XIX centuries, the elephant seal was practically exterminated by hunters on

Elephant seals are mammals that belong to the class of pinnipeds. They can be compared with seals, they are very similar. The difference is only in size, elephant seals are larger, as well as in a process of skin up to 30 cm long in the nose area, which is considered to be a trunk. That's why elephant seals were called that - because of this trunk.

Where do sea elephants live?

Elephant seals live in the southern hemisphere of the earth, prefer subantarctic climatic zones, but these mammals can also be found in arctic zones. Popular sites for elephant seal colonies are Heard and McDonald Islands, South Georgia, Prince Edward, Crozet, the Kerlegen Archipelago, and some peninsulas and islands in Western Antarctica.

What is unique about the elephant seal?

1. The elephant seal is considered the most large predator in the world. Its diet consists of squid, sometimes fish and krill.
2. Spend in water up to 300 days a year. The remaining 2-3 weeks, elephant seals find a rookery on the beaches near the coast for mating and breeding.
3. During their stay in the water, elephant seals cover a distance of up to 13 thousand kilometers, making daily dives into the water up to 700 meters, but there have been cases of diving up to 2000 meters.
4. The maximum stay under water of a sea elephant is registered - this is 120 minutes.
5. The blood of elephant seals is saturated with oxygen, which makes it possible for them to make such long swims and dives. Yes, and the blood itself makes up a fifth of the entire body weight of a mammal (this is 2-3 times more than in humans).
6. The body length of males can vary from 4 to 6 meters, their body weight is 3-5 tons. And the body length of the female is much less - from 2.5 to 3 meters, body weight - up to 1 ton.
7. Baby elephant seals are called puppies. Puppies are born quite large. Their body length at birth can be 125 cm, and weight up to 50 kg.
8. The number of elephant seals in the world is about 800 thousand individuals, more than half of them live on the island of South Georgia.
9. The organization of the mating process of these mammals is similar to a harem. The strongest males regularly fight for their right to become the "master of the harem" with other males. Only a third of the males have the opportunity to get to the females.
10. Elephant seals move on land a little awkwardly because of their heavy weight. When moving, use the front fins, but most of weight is transferred to the back of the animal's body. In water, on the contrary, they feel harmonious and look very graceful.
11. Average duration the life of males is 18-20 years, and females - 12-14 years.

The process of mating or mating games of sea elephants

Elephant seals during swimming live alone and only 2-3 summer months these mammals spend on land, gathered in large groups for rest and reproduction. The size of such a group can reach 400 thousand individuals. The reproduction of these mammals occurs exclusively on land. Females become ready for reproduction and mating at the age of 2-3 years, males become sexually mature later: at 4-7 years.

When going ashore, everything sexually mature females gather in one pile and form the so-called harem, where only selected males have the right to get. Every male who wants to get into the society of females must defend his right to reproduce. Males emit a long roar and begin their battles among themselves. These battles are sometimes cruel and consist in the fact that one of the males drives another male out of his territory. In this battle, the size, weight and of course the age of the mammal play an important role.

After the victory, the male goes to the females and gets the opportunity to copulate with them. Only a third of all males can be honored with this honor. One male can mate with large quantity females: from 20 to 300 individuals, sometimes even up to a thousand females.

On average, 2-3 months after arriving on land, females have puppies. When puppies are three weeks old, they shed. The black fur that covered their body changes to a gray fur skin.

While feeding the puppies with milk, the female does not leave them even to catch food for herself. Feeding puppies can last up to 4 weeks.

In the 19th century, elephant seals were on the verge of extinction.

Indeed, in the 19th century, elephant seals were openly hunted, they were the object of hunting because of the subcutaneous fat that was extracted from their bodies. Especially a lot of large males were exterminated at that time, because of which the birth rate of puppies also decreased.


The extermination of sea elephants took place in a barbaric way. Animals were slaughtered with a spear on the shore, they were not allowed to reach the water, and even burning torches were thrust into their mouths. And all this for the sake of a layer of subcutaneous fat, which in elephant seals can reach a thickness of 15 cm.

But starting in 1964, the ban on hunting elephant seals came into force. Was created international convention for the conservation of Antarctic seals, which protects the rights of elephant seals and other pinnipeds.

The southern elephant seal belongs to the family of true seals. In terms of size, they occupy the second place among all pinnipeds, second in size only to the northern elephant seal. Even the indigenous inhabitant of the Arctic, the walrus, loses in all respects and is in an honorable third place. The largest representatives southern giants reach a length of 6.5 meters and weigh 3.5 tons. The usual length of the male is 5.5 meters with a mass of 2.5 tons.

The females are noticeably smaller. Their length does not exceed 3.5 meters, the weight rarely reaches one and a half tons. The hallmark of this huge seal is the trunk: a skin fold located on the upper part of the muzzle in males - females do not have such a formation. In a calm state, it reaches a length of 10 cm. When the elephant is excited, the muscles of the fold tighten, and the trunk increases to 25-30 cm. Due to its size, as well as the trunk, this animal was called the sea elephant.

Appearance

The animal has rough wrinkled skin. From above it is covered with sparse, hard and short dark brown fur. During the molt, which begins in December and lasts a month and a half, the old skin is covered with blisters and slides off the body in long wide strips. This process is very painful and unpleasant. The elephant lies on the ground and does not eat anything. He is very thin and weak. But after the renewal of the skin, it immediately rushes to the sea, where it quickly restores its strength.

Newborns are born with black fur. And it is not rare, but dense. Upon reaching 2 months, the color of the fur changes to light gray. The body of the southern elephant seal is covered with a thick layer of subcutaneous fat. It reaches a thickness of 10 cm, and its mass, in relation to body weight, is 35%. Fat protects the internal organs from hypothermia and improves the buoyancy of the animal.

Habitat

Southern elephant seals make their rookeries in the Falkland, South Orkney and South Shetland Islands. They also love South Georgia, Heard and the Kerguelen Islands. Macquarie Island to the south Pacific Ocean also lies in their area of ​​interest. On the shores covered with pebbles and sand, animals spend a long six months. Up to 10 thousand individuals gather in one place, forming huge rookeries.

Here they mate, give birth to cubs and molt. After molting, they swim to the open ocean, where they can live for many days without seeing land. southern elephant seal great swimmer, he is able to overcome huge sea distances. It can swim both 4 and 5 thousand kilometers to find itself in the zone of Antarctic pack ice or off the coast. South Africa and New Zealand. This animal dives to a depth of 500 meters, it can stay under water for 40 minutes.

Reproduction and lifespan

Animals begin to arrive at the rookeries by the beginning of spring. This is the end of August - the first decade of September (in southern hemisphere Summer comes in December and winter in June. At first, pregnant females appear on the rocky shores. Males pull up later. Fights immediately start between them. Sometimes they turn into whole bloody battles, since elephant seals have quite powerful front fangs.

In the end, everything calms down, and each male finds a harem. It can include 10 females, and a hundred. It all depends on the strength and aggression of the male. Babies are born in September and October. Females crawl away to give birth in secluded places. The cub is born alone. The length of his body reaches a meter, and the mass is 25-30 kg.

The mother feeds the baby with milk for a month. Then she returns to the male and becomes pregnant again. The gestation period is 11 months, that is, almost a year. The kid is left alone. He grows up without the supervision of his mother. When he is 3 months old, he swims with his peers to the open ocean. After molting, at the end of February, adult animals also leave the rookery until the next spring. Sexual maturity in males occurs at 4 years, in females at 2 years. The female gives birth every year for 10-12 years. These animals live on average 20 years.

Enemies

The southern elephant seal feeds on fish, cephalopods and mollusks. He himself becomes a victim of killer whales. These huge predators attack him both in coastal and open ocean waters. But since they do not like to move further than 800 km from the coast, a huge seal, having overcome this distance, is completely safe. Baby elephant seals are attacked by leopard seals.

Another enemy is man. In past centuries, he mercilessly destroyed harmless animals for their fat. From one killed elephant seal, at least 500 kg of a valuable product were obtained. Nowadays, the fishing of these animals is prohibited. As a result, their number has increased. The number of southern elephant seals today is 750 thousand heads. At least 250 thousand animals live on the island of South Georgia, the same number on the Kerguelen Islands. These are the largest rookeries of huge seals, which they share with penguins.

Elephant seals are pinnipeds from the true seal family. In their order, these animals are the largest and exceed the size of the well-known walruses. The closest relative of elephant seals is the hooded seal, with which they have common features. In total, there are 2 types of elephant seals - northern and southern.

Male northern elephant seal (Mirounga angustirostris).

Sea elephants got their name not by chance, they are animals of really gigantic sizes. The body length of the male southern elephant seal can reach up to 5 m, weight up to 2.5 tons! Females are much smaller and reach a length of “only” 3 m. Elephant seals differ from the rest of the seals in their overall weight and a large amount of subcutaneous fat. The weight of the fat layer can be 30% of total weight animal.

Penguins next to the southern elephant seal give an idea of ​​the size of this animal.

In addition to their size, elephant seals have another feature that makes them look like real elephants. The males of these animals have a thickened fleshy outgrowth on the nose, similar to a short trunk. During the mating season, the trunk is used for decoration, intimidation and as a resonator that enhances the formidable roar.

Male northern elephant seal during mating.

The females do not have a trunk.

The female northern elephant seal.

The skin of elephant seals is thick and rough like that of a walrus, but covered with short thick fur like that of real seals. Mature elephant seals are brown in color, while young ones are silver-gray.

Young southern elephant seal (Mirounga leonina).

Geographically, both species are also separated: the southern elephant seals live on the coast of Patagonia and the subantarctic islands, while the northern ones live on the west coast. North America from Mexico and California to Canada. Both species prefer to settle on pebbly beaches and gently sloping rocky coasts. Elephant seals, unlike other seals, form rather large rookeries, numbering up to a thousand individuals.

Female southern elephant seal on a rookery.

Interestingly, southern elephant seals have two types of rookeries - for breeding and for feeding. Feeding rookeries are several hundred kilometers away from the "maternity hospitals", so elephant seals regularly migrate. These animals feed mainly on cephalopods, less often on fish. In general, elephant seals are quite calm and even apathetic animals. Due to their heavy weight on land, they are clumsy and sluggish.

The breeding season occurs only once a year and begins in August-October (in the Southern Hemisphere it is spring). Sexually mature males and females are the first to arrive at the maternity rookeries, the young come a little later. During mating season males are transformed beyond recognition. If in regular time they just sleep on the shore, then during the rut they lose their peace and sleep. Each male occupies a certain area of ​​the beach and does not allow other males to enter it. When the competition grows, the opponents converge in a fierce battle. They roar loudly, puff out their noses and shake them funny in the air to intimidate the enemy. But it looks funny only to an outside observer, because the males themselves in fights bite each other to the point of blood and often inflict severe injuries on the opponent.

Male southern elephant seals in a bloody duel.

And the thing is that every female entering the territory of the male becomes his chosen one and mates with him (unless, of course, she is beaten off by an opponent). So males form around themselves harems of 10-30 females. Pregnancy lasts 11 months, so childbirth and mating occur almost simultaneously. Females give birth to one large cub, the “baby” weighs 20-30 kg! Baby elephant seals are born black. Mothers feed them with milk for a little more than a month, after which the young move to the periphery of the haulout and do not enter the water for several more weeks. All this time, the cubs live off the reserves of subcutaneous fat accumulated during feeding with milk. After some time, the animals molt, after which they leave the breeding grounds.

Sea elephant during molting.

In spite of large sizes many elephant seals (primarily young ones) die in the mouths of killer whales and sharks. Sometimes males die from wounds and general exhaustion during the rut, moreover, adult males often crush cubs in the cramped haulout. In general, these animals are not very prolific, moreover, their numbers have been greatly undermined by fishing. Previously, hunting for elephant seals was carried out for the sake of rendered fat (up to 400 kg from one male!), Meat and skins. Now the fishery has already been stopped, but the number of northern elephant seals is still low.

Yawning sea elephant.

Domain: eukaryotes

Kingdom: Animals

Type of: chordates

Class: mammals

Squad: Predatory

Family: real seals

Genus: sea ​​elephants

Spreading

Large colonies of the southern elephant seal are located on the following subantarctic archipelagos and islands: South Georgia, Kerguelen, Hurd, Macquarie. Outside of the mating season, individuals can be found on the coasts of South Africa, Australia, New Zealand, Patagonia and Antarctica. These animals can cover sea distances up to 4,800 km.

The northern elephant seal used to be distributed along the entire western coast of North America from Alaska to Baja California. In the 19th century, however, mass extermination these animals for the sake of the extraction of blubber. Every year, thousands of elephant seals became victims of hunters, and soon this species was already considered extinct. Only one small colony of less than a hundred individuals survived on the Mexican island of Guadalupe. After its discovery, northern elephant seals were taken under protection.

In the 1930s, elephant seals came out to mate on land in California's Channel Islands. Currently, northern elephant seals are found on many islands located along west coast continent. In the north, their range reaches the Farallon Islands, and outside the mating season even to Vancouver Island.

The population increases by 15% every year and today this species is no longer seriously threatened. However, the fact that the number of northern elephant seals has passed through a bottleneck has led to an extremely low genetic diversity of living individuals, which can become a serious problem under changing environmental conditions.

Description

Elephant seals (Mirounga) are the largest genus in the family of true seals, a class of mammals. There are two types of elephant seals, named according to the hemisphere in which they live.

The oldest confirmed fossils of these animals date back to the Pliocene era and were found in New Zealand. Only the adult male has a large trunk similar to that of an elephant. The male uses it to roar during the mating season. Southern elephant seals are slightly larger than northern ones. Sexual dimorphism is pronounced, males of both species are much larger than females. The average weight of an adult male of the southern species can be 3000 kg, and the body length can reach 5 m. An adult female weighs about 900 kg, and her body length is approximately 3 m. The color of the animal depends on sex, age and season. It can be rusty, light or dark brown, or gray color. The sea elephant has big body, short front flippers with toes and webbed rear flippers. Under the skin is a thick layer of fat that protects the animal in a cold environment. Every year, elephant seals molt. Average life expectancy is 20 to 22 years.

Kinds

There are two types of elephant seals: Southern and Northern. The northern elephant seal reaches large sizes, its body length reaches five meters, and its weight is up to three and a half tons. Females in weight and size are much inferior to males: weight up to 900 kilograms, body length up to three meters. The color of such elephant seals is gray. They live on the Californian and Mexican islands and on the island of Guadeloupe. Offspring are born in January. Southern elephant seals are brown and slightly smaller than their counterparts. They live in the waters of Antarctica, and bring offspring in October.

northern elephant seal

northern elephant seal(Mirounga angustirostris) is a species pinnipeds mammals from the family of real seals. The size of the male northern elephant seal reaches 6 m, and the females - more than 3 m. The name of this marine animal was given for big sizes and a nose capable of swelling and then resembling a folded trunk.

Males are very different from females - they are almost twice as large, and in the breeding season they often puff their noses to appear larger.

This huge pinniped - northern elephant seal - is found on the Pacific coast of America from Alaska to Hudson Bay.

The northern elephant seal feeds on small sharks, fish, and squid. Elephant seals come out in December and January so that the females can produce offspring. Males are the first to come ashore and defend the territory for their harem. Elephant seals form dense colonies on the shore. There is always one baby in a litter of elephant seals. It is covered in black fur and stays ashore for almost five months.

southern elephant seal

The southern elephant seal (Mirounga leonina) is the most large view seals in the world. The trunk of the southern elephant seal is much shorter than that of the northern counterpart: its length is about 10 cm. This huge, enlarged nose is absent in females and young males. After constant growth, the trunk reaches full sizes by the eighth year of life and hangs over the mouth with the nostrils down. During the mating season, this trunk swells even more due to the increased rush of blood. It happens that during fights, more aggressive male billhooks tear each other's trunks to shreds. Differences in size between males and females are significant. The male can reach sizes up to six and a half meters, and the female only three and a half meters. The weight of the male is up to three and a half tons, the female weighs a maximum of 900 kg.

Elephant seals prey on fish and cephalopods. Elephant seals are able to dive for prey to a depth of 1400 m. This is possible due to their large mass and large blood volume, which can store a lot of oxygen. Like whales, activity internal organs in elephant seals, during diving to a depth, it slows down, which reduces the consumption of oxygen. The natural enemies of elephant seals are white sharks and killer whales, hunting in the upper layers of the water.

Lifestyle

Elephant seals spend most of their lives underwater, feeding on fish and shellfish. They are able to dive to a depth of about 1400 meters, holding their breath for more than two hours. At the same time, the activity of their internal organs slows down, which saves the necessary amount of oxygen. Them natural enemies killer whales and white sharks are waiting for nosed seals in the upper layers of the water.

Elephant seals come ashore only when warm time years in order to give birth to offspring and conceive a new one. For three whole months, huge colonies fill the coastal zones. Two or three dozen females give birth to babies under the auspices of one male.

Fierce battles are fought for harems, in which opponents are capable of inflicting serious wounds on each other. Every year, additional scars appear on the body of the strongest and largest males.

Interestingly, outwardly clumsy and clumsy elephant seals literally change before our eyes during fights. Sometimes they even straighten up to their full gigantic height and, vigorously swinging their straightened trunk and back of the body, make amazing pirouettes.

Young three-four-year-old elephant seals are forced to lead a bachelor lifestyle - they are forced out of the edges of the colony by more mature eight-year-old counterparts. Considering this state of affairs unfair, from time to time they try to break through to "married" females, which leads to new fights.

In the harems, their own is seething family life. Each "wife" gives birth to one cub, about 80 cm long and weighing 20 kg. The mother feeds him with nutritious milk for 4-5 weeks, after which he must take care of himself. After leaving it, he stays on the shore for another month, extracting nutrients from the fat layer. During this period, molting occurs, after which the baby goes on his first voyage.

The female is ready for a new fertilization about a month after giving birth. Her pregnancy will last a long 11 months. Having conceived, she fattens a little in the sea, and then fits into the post-nuptial molt. Mature males are the last to molt.

Interestingly, during this period, animals of all ages relax so much that you can come close to them. The body of the seals resembles a spreading jelly, they absolutely do not pay attention to what is happening around. Having finished their "land" affairs, the seals go to the ocean.

Elephant seal food

Elephant seals feed on fish and cephalopods that are caught in the open sea. Recent studies on the coast of California, which measured the depth of immersion of animals, showed that elephant seals are able to dive to a depth of 1,000 m. They feed on marine animals, octopuses and even small sharks. Elephant seals have rather long fangs protruding from the gums by about four centimeters; molars are poorly developed, so they prefer soft-bodied prey that does not require thorough chewing.

Reproduction and lifespan

Immediately after the molt, the time of love comes in the life of elephants. From the middle of winter to the middle of spring, elephants fight, then breed, and put future offspring on their feet.

It all starts with the elephants sliding onto the shore. The female, being pregnant, since last year. After all, they have eleven months in this period. Male elephants have nothing to do with raising offspring.

Having found a quiet, inconspicuous place for herself, the mother gives birth to only one cub. He is born a meter tall, and weighing up to forty kilograms. For a whole month, the mother elephant feeds the child only with her own milk. It is among the representatives of these individuals, the most high-calorie. Its fat content is fifty percent. The child during feeding, gains weight well. After that, the mother leaves her child forever.

The offspring formed a sufficient layer of subcutaneous fat so that they could survive in the next adaptive, independent month of their lives. At the age of three months, children leave the haulouts and go to open waters.

As soon as the female moves away from her child, a period of mating battles begins without rules. The largest and oldest elephants fight not for life, but for death, for the right to become the sultan of their harem.

Elephants roar loudly at each other, inflate their trunks and swing them, in the hope that this will frighten the rival. Then powerful, sharp teeth come into play. The winner collects the ladies near him. Some have harems of three hundred females. And the victim, and all wounded, goes to the edge of the rookery. All the same, he finds a soul mate for himself, without having the authority of a hipper male. It is unfortunate, but during such fights, very often they suffer, and little children die, simply not noticing them in battle, they are trampled by adults.

Having gathered his women, the leader chooses a passion for himself, menacingly placing his front flipper on her back. So he shows superiority over her. And if the lady is not disposed to the meeting, the male does not care about such a circumstance. He climbs with all his tons onto her back. Here already resistance is useless.

The sexually mature period begins, in the younger generation, by the age of four in males. Females, from the age of two, are ready for mating. For ten years, female elephant seals can give birth to children. Then they get old. Elephant seals die at the age of fifteen or twenty.

1. The amazing ability of elephant seals is to sleep underwater. But how do animals manage to breathe at this time? After all, they have lungs, not gills! .. Scientists managed to find out the secret of such underwater sleep. After five or ten minutes of being underwater rib cage the animal expands, while the nostrils remain tightly closed. From this, the density of the body decreases, and it floats. At the surface of the water, the nostrils open, and for about three minutes the animal inhales air. Then it sinks to the bottom again. The eyes remain closed all this time: the elephant is clearly asleep.
2. Stones are usually found in the stomach of the elephant seal. Residents of the places where these animals live, believe that the stones serve as ballast during the immersion of elephants under water. There are other explanations as well. For example, stones in the stomach can contribute to the grinding of food - whole swallowed fish and crustaceans.
3. Among the males, four groups can be clearly distinguished. The first - "teenage" - includes animals aged from one to six years, their size does not exceed three meters. They appear on the rookery in winter, especially after storms, with the clear purpose of taking a break from swimming. These animals are the earliest to molt - in December (the beginning of summer in the southern hemisphere), and then all other animals appear in order of seniority: the older, the later. The second, or “youthful”, group is formed by animals aged from six to thirteen years, their sizes are from three to four and a half meters. They come to the beach in the fall, shortly after the females have cubs, but they do not fight with older males and, even before the start of the rut (after weaning the cubs), they swim into the sea. The next age group is the so-called applicants. Such males, ranging in size from four and a half to six meters, with a proudly swollen trunk, are in a constantly aggressive mood and climb to fight with the owners of the rookery - the owners of "harems" - powerful old males, trying to beat off some of the females from them. These old experienced males make up the fourth age group.
4. Observations have shown that the same old and strong male dominates the "harem" during the entire breeding season, and younger and weaker males are often forced to give up their place to a rival superior in strength to them. Although the fights of males are usually played out in the water, not far from the coast, panic also begins on the beach at this time - alarmed females scream, cubs try to escape. Therefore, from "harems", where they are disturbed too often, females try to move to calmer "harems".
5. The fight of males is an impressive sight. Rivals, having swum up to each other, rise “on their hind legs”, towering four meters above the shallow water, and freeze in this position for several minutes, resembling stone statues of monsters. Animals emit a dull roar, their trunks swell menacingly, irrigating the enemy with a cascade of spray. After such a presentation, the weaker enemy usually retreats backwards, continuing to roar menacingly, and, having moved to a safe distance, takes to his heels. The winner, on the other hand, lets out a proud cry and, having made several false throws in pursuit of the fugitive, calms down and returns to the beach.
6. No matter how intimidating such a battle may look from the outside, in most cases it does not come to serious bloodshed. Usually everything is limited to mutual intimidation, frightening roar and sniffling. The biological meaning of such behavior is clear: the strongest is revealed, who will take over the functions of the producer during the mating season and, as the successor of the family, will pass on his offspring positive traits. At the same time, the weaker young male does not die on the battlefield and is thus not excluded from the further process of reproduction of the species.
7. In relation to humans, tall males do not always show aggressiveness. And not they, but just the females can be the most dangerous for the researcher who dared to penetrate into the very thick of the herd. John Warham, for example, more than once had to get acquainted with their sharp teeth and shamefully run away, leaving a good piece of his trouser leg to the angry sea elephant.
8. Having been born, the cub emits a short bark, reminiscent of a dog, the mother responds to him in the same way, sniffs him and thus remembers. Subsequently, she will unmistakably distinguish him among many other cubs and will be able to return if he makes an attempt to escape.
9. One of the most amazing adaptations of the animal organism to the conditions of existence should be mentioned: the development of the embryo in the womb of the female is suspended for the duration of the molt, and the embryo is, as it were, "preserved" for the entire unfavorable period of the animal's life. (A similar phenomenon is observed in some other animals - many pinnipeds, as well as in sable, rabbit, kangaroo, etc.) The development of the embryo continues only in March, when the molt in females is already over.
10. The appearance of a molting elephant seal is the most deplorable: the old skin hangs on it in torn rags. First, she gets off the muzzle, and then from the rest of the body. At the same time, the poor fellows scratch their sides and stomach with flippers, trying to speed up this process, which is obviously unpleasant for them. Moulting animals are usually located in some moss-covered swamp, not far from the coast, and, restlessly tossing and turning, stir up loose soil, turning it into a dirty mess. In it, they are immersed to the very nostrils. The stench around is terrifying at this time.

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