Aquatic mammals - Characteristics and examples

All living beings on the planet have their origin in the aquatic environment .Throughout evolutionary history, mammals have been changing and adapting to conditions on the surface of the earth until, several million years ago, some submerged themselves in the oceans and rivers, adapting to life under these conditions.

In this article of Animals and Pets Online we will talk about aquatic mammals, better known as marine mammals, since it is in the seas where a greater number of species of this type They inhabit.Discover the characteristics of these animals and some examples.

Characteristics of aquatic mammals

The life of mammals in water is very different from that of terrestrial mammals.In order to survive in this environment, they have had to acquire special characteristics during their evolution.

Water is a much denser environment than air and, in addition, offers greater resistance, so aquatic mammals have an extremely aerodynamic body that allows them to cope easily.Develop fins similar to those of fish has been a significant morphological change.It allows them to increase speed, direct swimming and communicate.

Water is a medium that absorbs much more heat than air, for This, the aquatic mammals have a thick layer of fat under a hard and robust skin , which keep them isolated from these heat losses.when they live in very cold areas of the planet.Some marine mammals have hair, because certain vital functions are carried out outside the water, such as reproduction.

Those marine mammals that, in certain periods of their lives, inhabit the great depths, have developed other organs to be able to live in the darkness, like the sonar .The sense of sight in these ecosystems is not subtle, because sunlight does not reach that depth.

Like all mammals, these aquatic animals have mammary glands that produce milk for their offspring, sweat glands and gestate on their progeny inside their body.

Breathing of aquatic mammals

Aquatic mammals need air to breathe .Therefore, they take large amounts of air and keep it inside their lungs for long periods of time, when they submerge after taking air, are able to redirect blood to the brain, heart and skeletal muscle.Their muscles have a large concentration of a protein called myoglobin , capable of accumulating large amounts of oxygen.

In this way, aquatic animals are able to remain considerable periods of time without taking air.The young and newborn babies do not have this capacity developed, so they will need to take air more times than the rest of the group.

Types of aquatic mammals

Most species of aquatic mammals live in the marine environment.There are three orders of aquatic mammals: cetacea, carnivora and sirenia.

Order cetacea

Inside of the cetacea order, the most representative species are whales, dolphins, sperm whales, killer whales and porpoises .The cetaceans evolved from a species of terrestrial carnivorous ungulate more than 50 million years ago.The cetacea order Divide into three suborders (one of them extinct):

Archaeoceti : predecessor terrestrial quadruped animals of the current (extinct) cetaceans.
Mysticeti : they are whales with beards.They are carnivorous animals without teeth that take large puffs of water, then filter it through their beards and with the tongue collect the trapped fish.
Odontoceti : Dolphins, killer whales, porpoises and zifios are included here.It is a very diverse group, although its main characteristic l is that they have teeth.In this group we can find the pink dolphin ( Inia geoffrensis ), a kind of mammal aquatic river.

Carnival order

In the carnival order, we include seals, sea lions and walruses , although they could also include to the sea otter and polar bears.This group of animals appeared about 15 million years ago and are believed to be closely related to mustelids and asses (bears).

Order sirenia

Elultimo order, sirenia, includes dugongs and manatees .These animals have evolved from the tetiteriums, animals very similar to the elephants that appeared about 66 million years ago.The dugongs inhabit Australia and, manatees, in Africa and America.

List of examples of aquatic mammals and their names

Cetacea order

Mysticeti:

Greenland Whale ( Balaena mysticetus )
Whale Southern right ( Eubalaena australis )
Glacial free whale ( Eubalaena glacialis )
Pacific free whale ( Eubalaena japonica )
Common Rorcual ( Balaenoptera physalus )
Rorcual sei or borealis (Balaenoptera borealis)
Rorcual de Bryde (Balaenoptera brydei)
Tropical whale (Balaenoptera edeni)
Great blue whale or blue whale (Balaenoptera musculus)
Aliblanco, dwarf or common minke ( Balaenoptera acutorostrata)
Rorcual austral or Antarctic minke (Balaenoptera bonaerensis)
Rorcual of Omura (Balaenoptera omurai)
Yubarta or humpback whale ( Megaptera novaeangliae )
Gray whale ( Eschrichtius robustus )
Pygmy whale ( Caperea marginata )

Odontoceti:

Tonina overa ( Cephalorhynchus commersonii )
Heaviside dolphin ( Cephalorhynchus heavisidii )
Coastal common dolphin ( Delphinus capensis )
Pygmy killer whale ( Feresa attenuata )
Calderon common ( Globicephala melas )
Risso's dolphin ( Grampus griseus )
Fraser dolphin ( Lagenodelphis hosei )
Atlantic dolphin ( Lagenorhynchus acutus )
Northern dolphin without fin ( Lissodelphis borealis )
Common killer whale ( Orcinus orca )
Hong Kong pink dolphin ( Sousa chinensis )
Delfin listed ( Stenella coeruleoalba )
Bottlenose or bottlenose dolphin ( Tursiops truncatus )
Boto, Amazon dolphin, pink dolphin ( Inia geoffrensis )
Baiji, Chinese river dolphin ( Lipotes vexillifer )
Silver Dolphin ( Pontoporia blainvillei )
Beluga ( Delphinapterus leucas )
Narval ( Monodon monoceros )

Carnival order

Seal Mediterranean monk ( Monachus monachus )
Northern sea elephant ( Mirounga angustirostris )
Leopard seal ( Hydrurga leptonyx )
Common or harbor seal ( Phoca vitulina )
Australian and South African sea lion ( Arctocephalus pusillus )
Guadeloupe sea bear ( Arctophoca philippii townsendi )
Steller's sea lion ( Eumetopias jubatus )
California sea lion ( Zalophus californianus )
Sea otter ( Enhydra lutris )
Polar bear ( Ursus maritimus )

Sirenia order

Dugongo ( Dugong dugon )
Caribbean Manati ( Trichechus manatus )
Amazonian Manati ( Trichechus inunguis )
African Manati ( Trichechus senegalensis )

If you want to read more articles similar to Aquatic mammals-Features and examples , we recommend that you enter our Curiosity section It's from the animal world.

References

https://basicbiology.net/animal/mammals/marine

Bibliography

Irving, L.1973.Comparative Physiology of Thermoregulation.ACADEMIC PRESS, INC.2: 47-96.

Kramer, DL1988.The behavioral ecology of air breathing by aquatic animals.Canadian Journal of Zoology, 66 (1 ): 89-94.

Comments

Similarities between humans and chimpanzees

Humans are an animal species that is part of the order primates , like our closest relatives, the apes.For this reason it is not surprising that we have many things in common with these animals, but more specifically with chimpanzees, who are commonly considered as "cousins" of man. If you want to know what we have in common with primates and chimpanzees...Don't miss out on this Animals and Pets Online article! You will be amazed at all the similarities between humans and chimpanzees that exist, from the way of walking and thinking to the games we share.We are like two drops of water! Similarities between humans and chimpanzees Within the family of mammals we can find primates, a large group that includes about 445 living species, including humans and chimpanzees.Numerous studies state that these species evolved from a common ancestor, the Plesiadapis , a primate who lived on Earth approximately 65 million years ago. Brain of the apes Despite what it may ...

How to scare stray cats? - 15 non-harmful remedies

The presence of stray cats In the home it is not always welcome, especially if they defecate, dig and break the decorative plants or the garden.In fact, it can be considered a risk situation if they are also wild cats, since they are not properly socialized and can be carriers of parasites and viral diseases, factors that can worry parents and animal owners. Therefore, although we consider ourselves animalistic, we can face a serious dilemma when we want to scare off street cats that appear in our garden or terrace.Is there a really effective repellent for cats? How to drive away cats without harming them? Is it possible to apply any method to drive away effective and lasting stray cats? Or worse: it may not even be street cats, but domestic cats that take advantage of your garden to do their needs.What should we do then? In this article of Animals and Pets Online we will explain How to drive away stray cats with basic and effective advice, we will propose some home remedie...

Types of canaries and their names

How many races of canaries are there? At present, more than 30 types of canaries are known , this being the most abundant species of domestic bird in the world with parakeets, although there are many classifications possible, the canary breeds are usually divided into three large groups: Singing canaries : here, we find the most coveted breeds in canariculture, thanks to their incredible ability to learn and play melodies complex and a great variety of sounds.In the next sections we will see the main races of singing canaries. Canaries by color : this, perhaps, is the most basic classification of canaries, based on the color of their feathers.It is divided into subgroups according to the predominant pigments in its plumage, the lipochromic canaries (shades of dominant and recessive white, yellow and red) and the melancholic canaries (colors black, agate, green, bromine, isabela, brown and tona corrugated qualities). The position or position canaries : also called a design or...

Animals with exoskeleton - Names and examples

The body of the largest vertebrate animals is not a mystery to most of people: it is known that it has a skeleton, internal vital organs (heart, brain, etc.), a dermis of variable and organ characteristics through which the five senses are manifested, among other characteristics. However, have you wondered what the invertebrate morphology is like? Then you need to know all about the animals with exoskeleton, names and examples. Don't miss this Animals and Pets Online article! What is the exoskeleton? The exoskeleton is an external structure that covers the body of various animals, including arthropods.It is characterized by being resistant but flexible .This structure It consists of different substances depending on the subfile to which the animal belongs: chitin for insects and fungi, calcium in mollusks and corals or silica in diatoms among other components. In turn, the exoskeleton is formed by three structures : Cuticle : non-cellular layer secreted by the hyp...

Infection of eyes in dogs

In this article of Animals and Pets Online we will talk about the eye infection in dogs .The eyes are very delicate organs, susceptible to suffer different conditions due to the action of the weather or the presence of foreign bodies.Although they have their own protection mechanisms, sometimes infections can also occur. Next, we will see what are the most common causes of this disorder and what is its treatment, which our veterinarian will have to prescribe. Eye infection in dogs due to bacterial blepharitis Blepharitis is the inflammation of the eyelids .Yes, we will notice that our dog has a bad eye, with swollen eyelids, increased in thickness, swollen and crusted.that the eyelids remain stuck due to the purulent secretion that occurs.This eye infection in adult dogs can be associated with skin diseases such as atopy, demodectic mange, hypothyroidism or autoimmune diseases.In contrast, in puppies it is mainly associated with juvenile pyoderma.When blepharitis is caused b...

10 exotic birds of Chile

Chile is a country in South America that has an impressive geographical variety, due to the which can be found in mountainous areas, volcanic islands and even a polar strip.This multiplicity of climates and zones brings with it a great diversity of species in both flora and fauna. The exotic birds of Chile do not fall behind in terms of this diversity, thanks to which it is possible to find from small birds of warm climates, to penguins.Read reading this article of Animals and Pets Online so that you find out what are the most characteristic species of this country. 1 Andean Condor The Vultur gryphus , also called condor de los Andes, is considered the national bird of Chile , so it appears on the national shield.it's easy: its plumage is almost all black, with white wings and red head .It lives in rocky areas and feeds on carrona.Its appearance is imposing and intimidating. 2.Chilean Flamenco There are six species of flamingos around the world, and three of them ar...

SEXUAL REPRODUCTION in animals - Types and examples

Animals, as individual organisms, appear and disappear, but the species a which we belong is maintained, all thanks to reproduction, one of the vital functions of living beings.Within the animal kingdom we can find two reproductive strategies, asexual reproduction and sexual reproduction, more widespread among animals. sexual reproduction is the typical reproductive strategy of animals, although some of them can be reproduced exceptionally by means of an asexual strategy.Therefore, in this article of Animals and Pets Online we will explain that is the sexual reproduction of animals . Characteristics of sexual reproduction of animals Sexual reproduction is the reproductive strategy that many animals and plants carry out to give rise to new individuals that perpetuate the species. The characteristics that define this type of reproduction are several In the first place, in the sexual reproduction there are two individuals involved, unlike the asexual reproduction that is only ...

Types of monkeys and their names

Monkeys are primates classified according to scientific jargon in the Platirrinos or monkeys of the new world and the Cercopitecoideos or monkeys of the old world.The hominoids, which would be primates that have no tail, where man enters. Animals such as orangutan, chimpance, gorilla or gibbons also do not enter the scientific classification of monkeys, since the latter, in addition to having a tail, have a more primitive skeleton and are small animals. Then you can see the scientific classification of monkeys in more detail, where you can distinguish two different parvordenes and a total of six families of monkeys, all this in this article of Animals and Pets Online.The different types of monkeys and their names you can see them below: Classification of the Simiiform infraorder To correctly understand everything about the types of monkeys we must detail that there are a total of 6 families of monkeys grouped in 2 different parvordenes. Parvorden Platyrrhini: This in...

Diclofenac for dogs - Dosage and uses

The diclofenac sodium is the active substance of a a well-known drug and used under the trade name of Voltaren or Voltadol.It is a product that is used to fight pain .Has your veterinarian prescribed it for your dog? Do you have questions about its uses or doses? In this article of Animals and Pets Online we will talk about diclofenac for dogs , how this drug is used in veterinary medicine and what aspects are important to consider for its use As we always insist, this and any other medication can only be administered to a dog by veterinary prescription . Is diclofenac bad for dogs? Diclofenac is an active substance included in the group of non-steroidal anti-inflammatories , that is, those commonly known as NSAIDs.They are products that are prescribed for pain relief, especially related to bone joint problems .Diclofenac can be used for dogs as long as it is prescribed by the veterinarian. Veterinary use of diclofenac Diclofenac for pain in dogs is used in veterinary me...

How to know what size a mongrel dog will be?

When we talk about a mixed breed dog or mixed breed dog , generally we refer to a dog whose ancestry is unknown and that has typical characteristics of two or more breeds.This is usually the result of a non-selective breeding, but generally fortunate, since a mongrel dog can be exactly as good companion as a dog of a certain breed. Due to numerous factors, although here it is worth highlighting the great genetic variability, there are many advantages of having a mongrel dog and it is important to emphasize this point since unfortunately it is usually grant a lower value to a dog of these characteristics.If you are thinking of adopting a mixed breed dog, you are surely gathering all the necessary information, if you are wondering how to know what size a mongrel dog will be I didn't leave It is to read this article of Animals and Pets Online. Is it possible to know the size of a mongrel dog? Of course, estimating the exact size of a mongrel dog is not an easy task, although ...

Animals and Pets Online

Search This Blog