How are a fur seal and a seal similar? fur seal fur seal and seal difference

It is not clear what pulled me to reconsider Dr. House, but this story begins with him;)

So, the 9th episode of the 7th season ... and the first phrase "How is the sea lion different from fur seal? This question was asked by the girl to her father. For 10 seconds, which the father asked again and laughed off in response to the question, the thought “Well, what, the lions are larger in size, and the seals have a sweet and kind face ....” And then the girl says the answer "U sea ​​lions have ears...
After that, there was a thunder in my head and a murderous thought, “And the child will be smarter than me.”

These ears, cats and lions did not give me peace ... Honestly, I am, in a sense, an information maniac ... and I will dig until I “dig out”;) An hour later, I was enriched with new knowledge ... Here is what I managed to find.

Cats, lions, seals, walruses and ... all similar living creatures belong to the group of pinnipeds. But pinnipeds are divided ... into walruses, eared seals And real (non-eared) seals .

Sea lions just belong to the family of eared seals, and fur seals also belong to the same species. So both sea lions and fur seals with EARS. But there was no mistake in the script for this episode of Dr. House ... the mistake was in the translation ... The original phrase was: “What’s the difference between a sea lion and a seal?”. Seal is translated into Russian as a fur seal and a seal ... But seals are just the same without ears. So it is more logical to compare non-seals and lions and eared and non-eared seals.

Let's start with the most obvious - with the ears;) eared seals the ear is pronounced and even hangs down a little, a kind of small funny ear.

Wow, such a tiny and funny ear, it is almost invisible

But at seals there are no ears as such .. there is an “ear hole”, it is not visible at all. So if you don't look closely at the seal's head, it seems that it just has a smooth head (almost Kutsenko).

Try to find the "ear hole" in the seal seal

It makes no sense to compare the dimensions of the animals of both families themselves, since large-sized representatives are found in both.

They have different flippers: real seals - small and there are claws on the front paws of the fins, but the eared the fins are large and you can't manicure them. Because of the different structure of the fins, they move and swim differently.

Even this small lion cub has more flippers than a seal

Did you find flippers?

Members of the eared family decorously stride on land using both front and rear flippers; rear in more- they turn them as if forward and at the same time under themselves.

“And she herself is majestic ... she acts like Pava!”

A seals not so lucky with fins - so they act like real scouts - they move in a plastunsky way on their stomachs.

Crawl-crawl-crawl….

cat lions swim in the water "swooping" with their front flippers, just like birds flap their wings, and their "Earless" get together cheerfully sort out the front flippers in different directions and “taxi” the tail with the rear flippers.

And I'm flying…. and I'm flying…. and I want to fly!….

Brownian movement with paws?

Lions (and others lived in the same family) they like to make noise and quarrel, they yell like they are cut and already loudly, already laying their ears. And here "real" seals they behave quite decently, breaking the silence only with a barely audible grunt.

And finally, about socialization in society. eared seals very gregarious and very socially active animals. They like to gather in a big pile and enjoy the sun. At the same time, they are absolutely not shy and love a lot, it’s normal for them to sleep on top of each other.

Somewhere in the bay near San Diego

Although they write that eared seals on the contrary, they are individualists and rarely gather in seal flocks, but I have never seen them quite so proudly alone. But they certainly do not climb each other's heads.

These guys are better behaved ;)

They are so different, but so cute!

At first glance, it may seem that absolutely all seals are the same - the representatives are so similar to each other different types. And yet, looking closely, you can easily distinguish individuals belonging to different groups. Ears are the sign by which biologists separate real seals and eared seals.

The classification is based on the main hallmark. Harbor seals do not have auricles elevated above the skull.

Instead of ears, the common seal has two neat rounded holes. Nature took care to give the seal's body maximum streamlining, allowing it to swim at amazing speed.

Eared seals, which include the fur seal, according to scientists, descended from a different ancestor than real seals. The ancestors of the common seal were mustelid mammals, the eared seal is a descendant of an animal from the canine family.

Fur seals and common seals, despite different ancestors, in the process of evolution acquired incredibly similar features. And yet the difference in origin is reflected in the habits inherent in the representatives of two different families.

It is enough to see how the pinniped mammals of the fur seal and the common seal behave on land.

The similarity of animals is expressed in the following:

Both members of the families are pinnipeds, leading marine image life.

Appearance: the mass and body size of seals and fur seals are approximately the same.

Streamlined contours of bodies - the life of animals is inextricably linked with water.

Differences between common and eared seals:

On the shore, eared seals are more active, common seals, as a rule, just lie heavily, move little.

The body of the common seal is ideally adapted for swimming.

A seal, unlike a fur seal, can stay under water for a long time - almost 20 minutes.

Fur seals have better hearing and sharp eyesight.

According to the scientific classification, sea lions belong to the family Eared seals. But in my own way appearance and way of life they are significantly different from their closest relatives. That is, from cats. Who are they - these predatory mammals? And what does the inhabitant of the ocean have in common with the large cats found in the savannahs? The answer to this question is quite simple: in mature males, the hair on the collar is longer than on the rest of the body, which gives rise to a distant resemblance to the mane of an African predator.

There is an opinion that sea lions live only in the Southern Hemisphere. There are three species of them there - according to their habitat: Australian, New Zealand and southern, found off the coast of Africa and Latin America. But north of the equator, such animals are also common. This is a Californian lion and a sea lion. And if the first species is not much different from its southern counterparts (because it lives in the subtropics and there is no need for it to accumulate reserves of subcutaneous fat), then the sea lion has occupied a life niche in fairly high latitudes. It lives in Russia on the Kuril Islands, in Kamchatka, Sakhalin. It can also be found on the Commander and Alaska and the coast of North America up to California.

Sea lions, unlike other seals, are surprisingly graceful creatures. Even on land, they are quite active and move dexterously, and in the water they show the wonders of circus acrobatics. Their skin is brown, with rather short fur. This unattractive fur coat and meager reserves of fat saved the species of sea lions from extermination by people. Hunting them is not as profitable as fur seals and other seals, although the endemic species of these animals was completely destroyed in Japan. A streamlined body, strong flippers, a flattened small head with small, slightly bulging beautiful eyes allow the lion to dive to a depth of 90 meters and chase schools of fish at high speed.

These animals can spend whole days in the open sea. However, sea lions do not like long migrations. We can say that these are sedentary animals that do not move away from their beach at a distance of more than 25 km. They hunt for fish, crustaceans, molluscs. In turn, sea lions become the prey of killer whales and settle in colonies, but not as numerous as other eared seals. Their males are also more peaceful - all fights for the harem are, as a rule, "to the first blood." Females show aggressiveness only in the first days after birth. The young have golden fur and feed on mother's milk for up to six months. Females become sexually mature in the third year of life, and males in the fifth. But only at the age of seven does a lion cub acquire a mane and can defend its harem. The sea lion (his photo is here) is much larger than his graceful girlfriend: 300 kilograms of live weight against some 90 kg of a lady.

These animals have extremely developed mental activity. They are quick-witted, inventive, perfectly tamed and amenable to training. This, as well as their innate dexterity and grace, make them regular actors and dolphinariums. Therefore, most of us have known from childhood what a sea lion looks like. And in the conditions of a free life, flocks of these seals are saved from their natural enemies - sharks and killer whales - by keeping closer to people, settling in marinas, ports and even navigation buoys.

While viewing photos from Spain, where Kirill spent two wonderful weeks ;-) we ran into a problem... we couldn't determine who is depicted in the photo from the dolphinarium: a seal, a fur seal, or, after all, a sea lion... and there is is there any difference between them at all?

Sea lions are just one of the many types of seals. Seals (together with walruses) are classified as pinnipeds (in Latin, this means "with legs-fins"). The limbs of seals, as the name suggests, are flippers; one pair of front and one pair of rear.

Seals are divided into two groups - true seals, which have only auditory openings, but no pinnae, and eared seals, so named because they have small pinnae. The group of true seals includes the gray seal, the harp seal and the huge elephant seal, which can reach a length of 6.5 m and a weight of 3.5 tons. Sea lions and fur seals are eared seals.

There are other differences between sea lions and their earless relatives besides the difference in ears. Sea lions have longer flippers than earless seals. Their flippers are wing-like and have no hair, while seal flippers are covered with hair. In sea lions, the back flippers are bent forward, due to which the animals on the shore lean on the ground with all their flippers. In real seals, the rear flippers do not bend forward, therefore, moving along the ground, they touch the front flippers and glide on their stomachs like caterpillars.

Fur seals and lions are two different subfamilies.

sea ​​lions(lat. Otariinae) - a subfamily of eared seals, which includes the following five monotypic species:

• Northern sea lion (Eumetopias jubatus), also called sea lion
• California sea lion (Zalophus californianus)
• Southern sea lion (Otaria flavescens)
• Australian sea lion (Neophoca cinerea)
• New Zealand sea lion (Phocarctos hookeri)

Seals(lat. Arctocephalinae) - subfamily

Fur seals, sea lions and walruses are oceanic mammals in the group of pinnipeds (Seals). The connection with water in seals is not as close as in whales. Seals need a mandatory rest on land.

The seals are related but are in different taxonomic families.

• The so-called Earless (true) seals are members of the Canidae family - Phocidae.
• Sea lions and seals are members of the Otariidae family (Sea lions).
• Walruses belong to the Walrus family.

The main difference between earless and eared seals is their ears.

• Sea lions have external ear flaps. These folds of skin are designed to protect the ear from water when the seal swims or dives.
• The "true" seals have no external ears at all. Need to get very close to them to see tiny holes on the sides of the seal's smooth head.

Another difference between seal groups is their hind flippers:

In real seals, the hind flippers do not bend and do not tuck forward, but only back. This does not allow them to "walk" on the ground. They move on land with undulating body movements.

Sea lions (fur seals and sea lions) can move on land using their hind legs (flippers).

Third difference:

Fourth difference:

• Sea lions are noisy animals.
• Real seals are much quieter - their vocalizations resemble soft grunts.

There are 18 species of true seals and 16 species of eared seals.

The largest representative of true seals is the southern elephant seal. Massive male, weighing up to 8500 pounds. (3 855.5 kg). females sea ​​elephant much smaller, but still weigh more than a 2,000 lb (907.18 kg) car.

Males measure about 20 feet (6 meters) in length, females are about half as long.

The smallest representative of true (earless) seals is the seal. The seal has an average body length of 5 feet (1.5 m) and a weight of 110 to 150 pounds (50 to 70 kg). Unlike other seals, male and female seals are about the same size.

The ringed seal is the most common seal species in the Arctic, according to a study by the National Oceanic and Oceanic Administration. atmospheric phenomena(NOAA).

Of the 16 species of eared seals, seven are sea lion species.

One of the most known species, according to NOAA, is considered the California sea lion. IN wild nature these animals live along the west coast of North America. They are often seen basking on beaches and marinas.

Males average about 700 pounds (315 kg) and can reach weights in excess of 1,000 pounds (455 kg). Females weigh 240 pounds (110 kg) on ​​average.

Natural environment of seals (seals)

True seals usually live in the cold waters of the Arctic Ocean and off the coast of Antarctica.

Harp (harp seal), ringed seal(akiba), Icelandic hooded seal, bearded seal (beared seal), spotted seal (larga), bearded walrus and lionfish - live in the Arctic.

The crabeater, Weddell, leopard seal and Ross seals live in Antarctica.

Fur seals and sea lions live in the northern part Pacific Ocean between Asia and North America, and off the coast South America, Antarctica, South West Africa and southern Australia. They may spend about two years in the open ocean before returning to their breeding grounds.

Some seals make caves in the snow. Others never leave the ice and poke breathing holes in the ice.

What do seals eat?

Seals primarily hunt fish, but they also eat eels, squids, octopuses, and lobsters.

Sea leopards are able to eat penguins and small seals.

The gray seal is capable of eating up to 10 pounds (4.5 kg) of food a day. He sometimes skips meals for several days in a row, and lives off the energy of stored fat. And often completely stops eating - during the mating season does not eat for several weeks.

All pinnipeds - from true seals (earless) to eared seals (sea lions) and walruses (tusked odobenids) - are carnivores. They are related to dogs, coyotes, foxes, wolves, skunks, otters, and bears.

How do Bellies appear?

When mating season arrives, male seals will make deep guttural sounds to attract the attention of females. The male seal also calls other males to duel with the help of sounds.

Seals are very territorial animals when it comes to mating. They will fight for the right to mate, hit and bite each other. The winner gets the opportunity to mate with 50 females in their area.

Pregnancy of the female lasts about 10 months. When they feel that it is time to give birth, some of them dig nests in the sand, where they have cubs. Other seals lay their babies directly on the iceberg, on the snow.

Belki, so called puppies of seals.

Seals and sea lions only have one pup a year. Baby pups will be nursed on the ground by their mothers until they are covered with waterproof fur. It may take about 1 month.

The females will mate and become pregnant again as soon as her pup is weaned.

Males are not able to mate until they are 8 years old because they need enough a big increase and enough strength to win the fight for the right mating.

Some other facts about seals

All pinnipeds - seals, sea lions and walruses - are protected under the Marine Mammal Protection Act.

Most seals are not considered endangered, according to the Red List. International Union Conservation of Nature (IUCN).

However, there are a few exceptions.

The Caribbean seal was declared extinct in 2008.

• The Galapagos seal and the monk seal are both critically endangered.
• Some local groups, such as the Gray Seals in the Baltic Sea, are also at risk.
• Northern fur seal and hooded seal are also vulnerable.

Northern seals, Baikal seals and Ursula seals are also vulnerable animals. They are trying to breed at the New England Aquarium in Boston.

The crabeater seal, among the seal species, has the largest population in the world. It is estimated that there are up to 75 million individuals.

The elephant seal has what is called "smoker's blood" - it has the same amount of carbon monoxide in its blood as a person who smokes 40 or more cigarettes a day. Scientists believe that this high level The gas in their blood protects them as they dive into the deep levels of the ocean.

Harp seals can stay underwater for up to 15 minutes.

The results of the Weddell seals are even more impressive. Their record for staying underwater is 80 minutes. They only come up for air when they find holes in the layers of ice above the ocean.

Farallon Bay (Farallones) National marine reserve California is home to one fifth of the world's seals. These marine mammals believe they have found a safe haven within the reserve.