Is a dolphin a mammal - Dolphin Profile. The dolphin is a small to medium-sized marine mammal, which are found all over the world, generally in warmer waters. They usually inhabit shallow seas and continental shelves. They are members of the order Cetacea, of which there are four families, the oceanic dolphins (Delphinidae), Indian river dolphins (Platanistidae), the new world river dolphins …

 
Bottlenose dolphins are found in tropical oceans and other warm waters around the globe. They were once widely hunted for meat and oil (used for lamps and cooking), but today only limited dolphin .... The outsiders series

Dolphin pods can contain anywhere between 2 to 30 dolphins at any given time. In some cases, pods will combine to form superpods. These superpods have been known to have upwards of 1000 members! Being a type of mammal, dolphins must come to the surface of the water to breathe.Dolphins are a group of small, gregarious, streamlined whales or two species of oceanic sport and food fishes. They have a well-defined, beaklike snout and are usually called …Dolphins are carnivores. They eat a variety of fish, especially flying fish. Catching these flying fish sometimes requires the dolphins to leap out of the water. Dolphins are aquat...Dolphins vary from fish in a number of ways. Both dolphins and fish have adapted to live their whole lives in the water, both have streamlined bodies and fins. But, dolphins are mammals and so they need regularly visit the surface to breathe air to survive, otherwise they would drown. Fish on the other hand extract oxygen from the water and do not need to surface. Dolphins …Descended from land mammals, marine mammals are a unique group of animals that re-entered the ocean and evolved to depend on it. They come in a range of shapes and sizes, from flippered sea dwellers who never leave the water to hybrid creatures that can also move and spend time on land. Some are swimmers, others are divers, and …Dolphins are highly intelligent animals that are closely related to whales. There are more than 40 known species of dolphin in the world. ... Is a starfish a fish or a mammal? Are dolphins amphibians? Are dolphins cartilaginous fish? Are dolphins invertebrates or vertebrates? Are fish mammals or amphibians? Is a seahorse a fish or an amphibian?killer whale: A dolphin species (Orcinus orca) whose name means whale killer. These animals belong to the order of marine mammals known as Cetacea (or cetaceans). mammal: A warm-blooded animal distinguished by the possession of hair or fur, the secretion of milk by females for feeding their young, and (typically) the bearing of live young.Marine mammals are found in marine ecosystems around the globe. They are a diverse group of mammals with unique physical adaptations that allow them to thrive in the marine environment with extreme temperatures, depths, pressure, and darkness. Marine mammals are classified into four different taxonomic groups: cetaceans (whales, dolphins, …Dolphins and porpoises share all of the traits of mammals with ancestors dating back millions of years and studied to be land animals that adapted to the aquatic lifestyle. Dolphins are animals that breath air, are warm-blooded, produce live offspring, and produce milk. Dolphins are a very important part of our ocean eco-system and must be ...A dolphin's teeth are cone-shaped, while a porpoise's are shaped like little shovels. Similarly, you can identify them by the shape of the fin on their backs: If you see a hooked-shaped fin poking out of the water, it's likely a dolphin, and a more triangular fin could belong to a porpoise. Behaviorally, they're very different as well: Dolphins ...1) Bottlenose dolphins are marine mammals that live in tropical and temperate oceans (oceans with mild temperatures) around the world. This includes the waters ...No, dolphins don’t need hair at the mature age. They are mammals that are adapted to living in the water. Belong to a group of aquatic animals that are called cetaceans. They have a few hairs on their snouts when they are born, which fall off after a few weeks. However, when they attain maturity, they do not grow any hair on their bodies.Oct 12, 2018 · Theories for These Names. Apparently few answers exist about how and why the term "dolphin" became attached to the mahi mahi fish. In fact, the etymology of the word "dolphin" reveals that the term originally meant "womb." So the word fits the dolphin, the marine mammal, since female dolphins give birth to live young; they have wombs. Size. Whales are generally larger than dolphins. The blue whale is the largest animal on Earth, measuring up to 100 feet in length and weighing over 200 tons.In contrast, the largest dolphin, the killer whale (or orca), is only about 30 feet long and weighs around 10 tons. Shape and Appearance. Whales tend to have a more streamlined body shape and a …Dolphins are incredibly intelligent, social, wide-ranging and deep-diving marine mammals. They live in complex social groups called pods, often made up of family members. In the wild, dolphins are very interconnected to the health and survival of the entire marine ecosystem. There are many different species of dolphin that inhabit various parts ... In fact, the largest dolphin is the killer whale! Depending on the species, dolphins range in color from white, pearl, and pink to darker shades of brown, gray, blue, and black. A dolphin is a mammal, and needs to breathe air through its blowhole, just as whales and porpoises do. Dolphins have smooth skin, flippers, and a dorsal fin. Among the adaptations of dolphins are hydrodynamic bodies, blowholes on top of their heads, flippers and flukes and echolocation. As with other whales, the ancestors of dolphins we...Dolphins are warm-blooded, social and intelligent creatures that live in the world's seas and oceans. They have conical-shaped teeth, conical-shaped teeth, and can communicate with echolocation. They are part of the …One way beluga whales differ from other species of whales is the fact that they lack a dorsal fin – a fin located on the backs of marine animals – allowing them to swim beneath the ice. Keep reading to find out what the heck a beluga whale actually is – mammal, whale, dolphin, or porpoise. Table Of Contents.The official mammal class is Mammalia. Types of animals that are mammals include warm-blooded vertebrates that have hair or fur and whose babies drink milk. Unlike other animal types like birds and insects, all mammal babies drink milk that comes from their mother’s bodies. This is one of the key ways to know if an animal is a mammal.Dolphin: common name of aquatic mammals within the infr-aorder Cetacea. Kingdom: | Animalia. Phylum: | Chordata. Class: | Mammalia. Order: | Cetacea. Family: | …toothed whale, (suborder Odontoceti), any of the odontocete cetaceans, including the oceanic dolphins, river dolphins, porpoises, pilot whales, beaked whales, and bottlenose whales, as well as the killer whale, sperm whale, narwhal, and beluga whale.. The ancestors of present-day odontocetes probably evolved during the Oligocene Epoch (33.7 million to …The common dolphin is a cetacean – a member of the infraorder Cetacea, which encompasses all marine mammals commonly known as whales, dolphins, and porpoises. Within this order, the common dolphin belongs to the family Delphinidae, often referred to as the oceanic dolphin family. This group is large and varied, with about 36 …Blue whales are largest mammal ever known to exist on Earth. HowStuffWorks looks at a new study that tries to find out why they're so big. Advertisement If you've been ever been wh...The Irrawaddy dolphin is a marine mammal which means it’s warm-blooded, gives birth, produces milk (to feed its children) and breathes air. The Irrawaddy dolphin gets its name from the river that it is found swimming in, “the Irrawaddy river”. Although these dolphins look like a dark colored beluga whale in terms of appearance it is ...Placental mammal groups include Primates (apes, monkeys and lemurs), Pinnipeds (seals, sea lions and walruses), Cetacea (whales, dolphins and porpoises), Rodents (Rats, mice, beavers, etc.) Carnivora (dogs, cats and bears). You can find out about the many types of mammal in Part 2 of this series: Types Of Mammals.AWSALB is an application load balancer cookie set by Amazon Web Services to map the session to the target. Used by Microsoft Advertising as a unique ID for visitors. Whales are not fish. They are marine mammals, as are dolphins and porpoises. They are …Dolphins are mammals, and have characteristics which are distinct to mammals. They have three middle ear bones, and they have hair at some point during their life cycles, and females have mammary glands which are used to nurse their young. The ocean can be a very harsh place for a mammal to live. However, dolphins are uniquely adapted for the ...Yes, dolphins are mammals and not fish. Dolphins have mammary glands, a neocortex, lung breathing systems, and warm …At full size Atlantic Spotted Dolphins are about 2.2 – 2.5 metres in length and weigh around 200 pounds. Atlantic Spotted Dolphins may easily be confused with the Common Bottlenose Dolphin and the Pantropical Spotted Dolphin when observed at sea. In common with other species in its genus the Atlantic Spotted Dolphins is a gregarious creature.Nov 17, 2020 · Nine of the Weirdest Penises in the Animal Kingdom. A short list of some of nature’s most curious phalluses, from the echidna’s four-headed unit to the dolphin’s prehensile member. Birds ... Bottlenose dolphin, any of two or three species of oceanic dolphins classified in the mammal family Delphinidae and characterized by a bottle-shaped snout. They are known for their intelligence; they communicate with one another through sounds and ultrasonic pulses and have shown evidence of long social memories. Key Takeaways. Fish and mammals are two distinct groups of animals that share some similarities, but also have many differences. Aquatic mammals, such as whales, dolphins, and seals, are classified as mammals because they have lungs to breathe air, nurse their young with milk, and have hair or fur. Despite their differences, both fish and mammals have evolved a …Why is a dolphin a mammal not a fish? Even though they live in the ocean all of the time, dolphins are mammals, not fish. Like every mammal, dolphins are warm blooded. Unlike fish, who breathe through gills, dolphins breathe air using lungs.The harbor porpoise, scientific name Phocoena phocoena, is a small marine mammal that resides primarily in the cold coastal waters of the North Atlantic, North Pacific, and Black Sea.. Smaller than most dolphin species, harbor porpoises typically measure between 5 and 6 feet / 1.52 and 1.83 meters long and weigh around 110 to 200 pounds / 50 to 91 kg.This is partially due to the dolphin’s wider distribution (as a species, dolphins have more diversity in food choices) and the preferences of certain foods based on a dolphin’s species. In fact, the killer whale (the world’s largest dolphin) is known to consume other marine mammals as part of its diet! IntelligencePinniped. Pinnipeds (pronounced / ˈpɪnɪˌpɛdz / ), commonly known as seals, [a] are a widely distributed and diverse clade of carnivorous, fin -footed, semiaquatic, mostly marine mammals. They comprise the extant families Odobenidae (whose only living member is the walrus ), Otariidae (the eared seals: sea lions and fur seals ), and ...The bottlenosed dolphin is one of 79 species of cetaceans. Its common name originates from its blunt snout, or rostrum. These aquatic mammals are silver-grey on ...The dolphin belongs to the group of mammals scientifically known as cetaceans. Dolphins are part of the largest group of marine mammals belonging to the order Cetacea. The taxonomy of dolphins Another characteristic of the dolphin is that of its taxonomy, which is as follows: Kingdom: Animals; Phylum: Chordates; Subphylum: Vertebrates; Class ...Dec 13, 2562 BE ... Dolphins are small-toothed Cetaceans, a group of marine mammals that evolved from land mammals. They have developed numerous adaptations that ...Feb 23, 2017 · Yes, a dolphin IS a mammal. Dolphins are members of the group of mammals called Cetacea, which includes whales and porpoises. They have lungs, a backbone, hair or hair follicles, and give birth to live young. They are also related to hippos, the closest living relatives of the Cetaceans. Dolphin and marine trainers care for marine mammals—dolphins, whales, sea lions, seals, and walruses—that are kept in captivity for aquariums, zoos, theme parks, or research facilities. They form trusting relationships with the marine mammals in their care and use operant conditioning, a form of positive reinforcement, to train the mammals ...The highly anticipated matchup between the Buffalo Bills and the Miami Dolphins is just around the corner, and fans are eager to catch all the action live. When it comes to broadca...All are air-breathing, warm-blooded mammals that nurse their young. The difference between a dolphin and a porpoise has to do with their appearance: dolphins have longer snouts, bigger mouths, more curved dorsal fins, and longer, leaner bodies than porpoises. Places. Yangtze, Southern Chile, Arctic. Browse Photos & Videos h.The highly anticipated matchup between the Buffalo Bills and the Miami Dolphins is just around the corner. Whether you’re a die-hard fan or simply love watching competitive footbal...There are three species of Dolphins that commonly occur in nearshore waters, the bottlenose dolphin, the Atlantic spotted dolphin and Risso's dolphin. Without ...This small mammal was about 4 metres long (13.1 feet) and had 14 teeth—more like a typical dolphin. This implies that the ancestors of the present-day killer whale diverged from other cetaceans during the Miocene Epoch (23 million to 5.3 million years ago); most dolphin evolution took place near the beginning of this epoch.When we think of dolphins, we often picture them as intelligent and playful creatures swimming through the ocean. But did you know that dolphins areDolphins are marine mammals. They must surface to breathe air and give birth to live young. A dolphin pregnancy last between nine and 16 months. The mother feeds her …AWSALB is an application load balancer cookie set by Amazon Web Services to map the session to the target. Used by Microsoft Advertising as a unique ID for visitors. Whales are not fish. They are marine mammals, as are dolphins and porpoises. They are …In river dolphin. The largest species is the Amazon river dolphin ( Inia geoffrensis ). Also called boto, bufeo, and pink dolphin, it is common in the turbid waters of the Amazon and Orinoco river basins. A male Amazon river dolphin can grow to over 2.4 metres (8 feet) and 160 kg (350 pounds); females…. Home Science Mammals Whales, Dolphins ...Sep 23, 2022 · Dolphins are believed to have evolved from land-dwelling mammals from the order of “Artiodactyls”, with the closest living relative being the hippo. Anatomy of dolphins The size of a dolphin varies from 5.6 feet to 31 feet and the average weight is about 110 pounds. They are not. Dolphins cannot breathe in water using gills as fish can, do not have scales, and are not cold-blooded. Dolphins are mammals that returned to the sea millions of years ago. Being a mammal means that: they breathe air (and do not have gills like fish); they are warm-blooded and generate their own heat; When it comes to painting your walls with PPG Paint’s stunning Blue Dolphin color, one of the most important decisions you’ll have to make is choosing the right finish. The finish ...The highly anticipated matchup between the Stream Bills and the Dolphins is just around the corner. As fans eagerly await kickoff, let’s take a closer look at what we can expect fr...This small mammal was about 4 metres long (13.1 feet) and had 14 teeth—more like a typical dolphin. This implies that the ancestors of the present-day killer whale diverged from other cetaceans during the Miocene Epoch (23 million to 5.3 million years ago); most dolphin evolution took place near the beginning of this epoch.The dolphin’s extremely smooth skin reduces drag. The dolphin’s narrow, rounded (bottle)nose reduces drag. The dolphin’s streamlined form reduces drag. The dolphin’s dorsal fin doesn’t directly help it swim fast, but it does help the animal to make sudden turns and stabilize its motion in turbulent water.The dorsal fin, the one in the middle of the back, may be a key differentiator of the marine mammals, at least for sunbathers who may catch just a glimpse of the animal. Dolphins have a curved, or ...The dolphin’s extremely smooth skin reduces drag. The dolphin’s narrow, rounded (bottle)nose reduces drag. The dolphin’s streamlined form reduces drag. The dolphin’s dorsal fin doesn’t directly help it swim fast, but it does help the animal to make sudden turns and stabilize its motion in turbulent water.Bottlenose dolphins are aquatic mammals in the genus Tursiops. They are common, cosmopolitan members of the family Delphinidae, the family of oceanic dolphins. [3] Molecular studies show the genus contains three species: the common bottlenose dolphin ( Tursiops truncatus ), the Indo-Pacific bottlenose dolphin ( Tursiops aduncus ), and Tamanend ...The dolphin closes one eye for 5 to 10 minutes and then the other eye. In a 24 hour period each separate eye is closed for an average of 3 to 4 hours. Common dolphins are mammals. Therefore, unlike fish they cannot breathe underwater via gills. Dolphins have a blowhole on top of their heads and to breathe they must jump out of the water. Mammals are a diverse group of animals that includes between 5,000 and 5,500 species adapted to live in a wide variety of environments. The vast majority of mammal species live on land, although some, such as otters, seals, and dolphins, live in freshwater and ocean habitats. Bats are mammals that are capable of flying. Dolphins are a group of small, gregarious, streamlined whales or two species of oceanic sport and food fishes. They have a well-defined, beaklike snout and are usually called …This is partially due to the dolphin’s wider distribution (as a species, dolphins have more diversity in food choices) and the preferences of certain foods based on a dolphin’s species. In fact, the killer whale (the world’s largest dolphin) is known to consume other marine mammals as part of its diet! IntelligenceBlue whales are largest mammal ever known to exist on Earth. HowStuffWorks looks at a new study that tries to find out why they're so big. Advertisement If you've been ever been wh...Oct 17, 2566 BE ... Dolphins, porpoises, and whales all belong to a group of marine animals known as cetaceans. Like all mammals, cetaceans are warm-blooded ...Established in 2017, CRI is an independent research organisation with a focus on land and marine mammals such as cetaceans, the group of aquatic mammals that …A cetacean is a member of the infraorder Cetacea – a group of marine mammals that includes whales, dolphins, and porpoises. There are approximately 90 species of cetaceans, divided into two main groups, the parvorders Mysticeti (baleen whales) and Odontoceti (toothed whales). The gray whale is a baleen whale. In this photo its comb-like ...Cetacean, any member of an entirely aquatic group of mammals commonly known as whales, dolphins, and porpoises. Cetaceans are entirely carnivorous. Their ancestors moved their limbs in a vertical plane, and thus cetaceans use vertical strokes when they swim, instead of horizontal strokes like a crocodile or fish.Grampus griseus. ( G. Cuvier, 1812) Distribution of Risso's dolphin. Risso's dolphin ( Grampus griseus) is a dolphin, the only species of the genus Grampus. Some of the closest related species to these dolphins include: pilot whales ( Globicephala spp.), pygmy killer whales ( Feresa attenuata ), melon-headed whales ( Peponocephala electra ...All dolphins have bones, just like all mammals have bones. However, the point of difference is that dolphin bones are much lighter, and thereby, they have a weaker skeleton. Dolphins have fully formed hand bones, and a radius and ulna like humans do. The bones are designed to help them survive the challenges of continually living in the water.The dolphin closes one eye for 5 to 10 minutes and then the other eye. In a 24 hour period each separate eye is closed for an average of 3 to 4 hours. Common dolphins are mammals. Therefore, unlike fish they cannot breathe underwater via gills. Dolphins have a blowhole on top of their heads and to breathe they must jump out of the water.Sep 21, 2022 · The dolphin family is related to species like oceanic dolphins, river dolphins, killer whales, false killer whales, and pilot whales. Dolphins are cetaceans–mammals that spend their lives immersed in the water. Dolphins are differentiated from fish because they breathe through lungs, not gills. Though they can hold their breath up to 10 ... All these factors combined leave the dolphins in the mammal group rather than the fish group. Why is a fish not considered to be a mammal? Generally, fish cannot be considered mammals, since most of them are cold-blooded, do not possess hair, fur, fingers, limbs, or even toes, and they do not breathe through lungs like mammals instead they ...Are dolphins and porpoises whales? These marine mammals have many things in common. Whales, dolphins, and porpoises all fall under the order cetacea. Within this order, there are two suborders, the Mysticeti, or baleen whales, and the odontoceti, or toothed whales, which includes dolphins and porpoises as well as sperm whales. If you consider ...Yes the killer whale is a mammal. In fact the killer whale is the largest living marine mammals in the dolphin family, which is composed of over 40 different species. When fully grown the killer whale can measure in at up to 32 ft. long (16 – 26 ft. on average) and weight as much as 6 tons (3 – 4.5 tons on average).Psychology questions and answers. Argument B Since Flipper is a dolphin, it follows that Flipper is a mammal. Is Argument B deductive or inductive? Deductive Inductive Argument B is an example of which type of argument? Categorical syllogism Argument based on signs Hypothetical syllogism Disjunctive syllogism Prediction Argument from authority ...Yes, dolphins are placental mammals/animals. Dolphins are similar to land mammals and other marine mammals in several ways and share many of the same characteristics.. It includes being warm-blooded animals, requiring oxygen to breathe, going through a pregnancy period, giving birth to their young, and producing milk which they use to nurse …Dolphins vary from fish in a number of ways. Both dolphins and fish have adapted to live their whole lives in the water, both have streamlined bodies and fins. But, dolphins are mammals and so they need regularly visit the surface to breathe air to survive, otherwise they would drown. Fish on the other hand extract oxygen from the water and do not need to surface. Dolphins …The dolphin family is related to species like oceanic dolphins, river dolphins, killer whales, false killer whales, and pilot whales. Dolphins are cetaceans–mammals that spend their lives immersed in the water. Dolphins are differentiated from fish because they breathe through lungs, not gills. Though they can hold their breath up to 10 ...Aug 29, 2023 · Dolphins belong to the mammalian order Cetacea, which includes whales, porpoises and other toothed whales. As mammals, dolphins share the same core traits that define mammalian species, such as being warm-blooded, having hair, giving live birth and feeding their young milk produced by the mothers. Descended from land mammals, marine mammals are a unique group of animals that re-entered the ocean and evolved to depend on it. They come in a range of shapes and sizes, from flippered sea dwellers who never leave the water to hybrid creatures that can also move and spend time on land. Some are swimmers, others are divers, and … Dolphins are marine mammals. They must surface to breathe air and give birth to live young. A dolphin pregnancy last between nine and 16 months. The mother feeds her offspring on milk. The sons and daughters of resident orcas stay with their maternal family for life. Dolphins eat fish, squid and crustaceans. Miles of white-sand beaches, nature trails, dolphin-watching tours, Lowcountry cuisine and more: Hilton Head has a little something for every type of traveler. Update: Some offers ...Bottlenose dolphins are aquatic mammals in the genus Tursiops. They are common, cosmopolitan members of the family Delphinidae, the family of oceanic dolphins. [3] Molecular studies show the genus contains three species: the common bottlenose dolphin ( Tursiops truncatus ), the Indo-Pacific bottlenose dolphin ( Tursiops aduncus ), and Tamanend ...A mammal is an animal that breathes air, has a backbone, and grows hair at some point during its life. In addition, all female mammals have glands that can produce milk. Mammals are among the most intelligent of all living creatures. A dolphin is an aquatic mammal within the infraorder Cetacea. Dolphin species belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins ), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin). When we think of dolphins, we often picture them as intelligent and playful creatures swimming through the ocean. But did you know that dolphins areDolphins are mammals; they breathe air and give birth to live young. Dolphins also have small hairs which grow on their rostrums. Dolphins and whales have a layer of fatty tissue under the skin, called blubber which maintains the animals’ body heat. This layer of fat also provides an important energy source. Dolphins and whales have very good ...But Darwin, in this case, seems to have been wrong. An analysis of 429 mammalian species published in Nature Communications reveals that just 45 percent …

Dolphins are at the top of the food chain and play an important role in the overall balance of the marine environment. They belong to a group of marine mammals called cetaceans (si-tay-shn). Marine mammals in the cetacean family include whales, dolphins, and porpoises. Dolphins tend to be social and live in groups. They exhibit complex methods of …. Boeing factory tour

is a dolphin a mammal

Hippos, though massive mammals, are actually startlingly fast when swimming. This video shows a hippo chasing a boat of tourists. Hippos are one of the most iconic and recognizable...Mammalian Diversification: Mammals inhabit every continent, including Antarctica (like seals), and in a vast array of environments, from the deepest oceans (whales and dolphins) to the skies (bats). Mammal Longevity: While some small mammals like shrews may live only a year or two, others have surprisingly long lifespans. For example, bowhead ...Dolphins naturally possess the most sophisticated sonar known to science. Mines and other potentially dangerous objects on the ocean floor that are difficult to ...Sep 26, 2565 BE ... A dolphin is an aquatic mammal. Dolphins are extremely intelligent and sociable animals, and have their own way to communicate with each ...Oct 17, 2566 BE ... Dolphins, porpoises, and whales all belong to a group of marine animals known as cetaceans. Like all mammals, cetaceans are warm-blooded ...Dolphins are a group of marine mammals that belong to the order Cetacea, which also includes whales and porpoises. They are found in oceans and rivers all around the world and are known for their intelligence, social behavior, and acrobatic abilities. There are over 40 different species of dolphins, ranging in size from the small Maui dolphin ...Yes, dolphins and whales are mammals. Like all mammals, they breath air, are warm blooded, give birth to live young, lactate and have hair. The ancestors of whales and dolphins lived on land millions of years ago and it is thought they were small dog-like mammals. Around 60 million years ago, these ancestors began evolving and adapting to live ...The harbor porpoise, scientific name Phocoena phocoena, is a small marine mammal that resides primarily in the cold coastal waters of the North Atlantic, North Pacific, and Black Sea.. Smaller than most dolphin species, harbor porpoises typically measure between 5 and 6 feet / 1.52 and 1.83 meters long and weigh around 110 to 200 pounds / 50 to 91 kg. Dolphins are mammals, not fish. E ven though they live in the ocean all of the time, dolphins are mammals, not fish. Also, dolphins are different than "dolphinfish," which are also known as mahi-mahi. Like every mammal, dolphins are warm blooded. Unlike fish, who breathe through gills, dolphins breathe air using lungs. Whales, Dolphins & Porpoises. Cetacean, (order Cetacea), any member of an entirely aquatic group of mammals commonly known as whales, dolphins, and porpoises. The ancient Greeks recognized that cetaceans breathe air, give birth to live young, produce milk, and have hair—all features of mammals.Dolphins are marine mammals. They must surface to breathe air and give birth to live young. A dolphin pregnancy last between nine and 16 months. The mother feeds her offspring on milk. The sons and daughters of resident orcas stay with their maternal family for life. Dolphins eat fish, squid and crustaceans..

Popular Topics