Whales are mammals because they give birth to live young, they have fur (although it is very sparse on their body), they have lungs and breath air and they provide milk for their young. Answer 3: ... Dolphins and other whales are all mammals called cetaceans.

How are cetaceans mammals?

The ancient Greeks recognized that cetaceans breathe air, give birth to live young, produce milk, and have hair—all features of mammals. ... Because of their body form, however, cetaceans were commonly grouped with the fishes.

Why are marine mammals mammals?

What makes a marine mammal a marine mammal? They must meet the characteristics of all mammals — they breathe air through lungs, are warm-blooded, have hair (at some point during life), and produce milk to nurse their young — while also living most or all of their lives in or very near the ocean.

Why are dolphins classified as mammals?

Like every mammal, dolphins are warm blooded. Unlike fish, who breathe through gills, dolphins breathe air using lungs. ... Other characteristics of dolphins that make them mammals rather than fish are that they give birth to live young rather than laying eggs and they feed their young with milk.

What makes an animal a mammal?

Mammals have hair or fur; are warm-blooded; most are born alive; the young are fed milk produced by the mother's mammary glands; and they have a more complex brain than other animals.

When Whales Walked

30 related questions found

Why are whales mammals?

Whales are mammals which means that, like humans and other land mammals, they have three inner ear bones and hair, they breathe air, and the females produce milk through mammary glands and suckle their young.

Why are mammals considered as the most advanced animals?

Mammals are regarded as the most advanced animal because they are the most recently evolved vertebrates who have the most advanced, complex brain, are the only animals that produce milk for their young ones, and give birth to babies.

Why dolphins and whales are mammals?

Are dolphins & whales mammals? 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.

Why whales and dolphins are considered as mammals?

Whales are mammals because they give birth to live young, they have fur (although it is very sparse on their body), they have lungs and breath air and they provide milk for their young. Answer 3: ... Dolphins and other whales are all mammals called cetaceans.

Why is a dolphin a mammal and a shark a fish?

Specifically, sharks are fish, meaning they have gills, breathe underwater and are cold-blooded. On the other hand, dolphins are mammals, much like humans, meaning they breathe air, are warm-blooded, and nurse their offspring. ... Dolphins are very social animals and travel, live, and hunt in pods.

Why are marine mammals important to the ecosystem?

Marine mammals play important ecological roles as both predator (many hunt for fish) and as prey, both for sharks and other, larger marine mammals. Humans have also long hunted marine mammals for food and fur.

What makes a cetacean a cetacean?

A cetacean is a member of the family of large aquatic mammals such as whales, dolphins, and porpoises. They have tails rather than hind limbs, and they have flippers instead of forearms. ... any of several whales having simple conical teeth and feeding on fish etc.

What are cetaceans physical characteristics?

Order Cetacea

• Fusiform-shaped body.
• Large body size.
• Virtually hairless.
• Blubber.
• No sebaceous glands.
• Tails flattened dorso-ventrally into flukes.
• Forelimbs are modified into flippers.
• Vestigial hindlimbs.

Why do pinnipeds and cetaceans migrate?

For cetaceans, migration occurs for food and reproduction. Pinnipeds migrate for these reasons as well as for molting. Recently weaned pinnipeds (some exploratory swimming around haul-out site) Nonfasting Odontocetes Female otariids Some phocids Polar bears Sirenians Otters “A true migratory species.

What type of ecosystem do cetaceans live in?

Whales and dolphins live and feed in almost every part of the marine environ- ment including the great rivers and their estuaries (Platanistidae), continen- tal shelves (Mysticeti, Phocoenidae), deep ocean canyons (Physetertdae, Ziphiidae), tropical oceans (Delphinidae), and even amidst ice in the Arctic (Monodontidae, ...

What is a cetacean species?

Cetaceans (order Cetacea) are an entirely aquatic order of mammals comprising the whales, the dolphins, and the porpoises. The ancient Greeks recognized that cetaceans breathe air, give birth to live young, produce milk, and have hair—all features of mammals.

How are whales related to other mammals?

According to molecular evidence, the closest living relatives of whales are, quite surprisingly, the artiodactyls, a group of hoofed mammals that includes deer, cows, sheep, pigs, giraffes, camels and hippos. ... Based on these physical similarities, Thewissen suggests that the raoellids are a sister group to the whales.

Why is whale vomit so expensive?

The reason for its high cost is its use in the perfume market, especially to create fragrances like musk. It is believed to be in high demand in countries like Dubai that have a large perfume market. Ancient Egyptians used it as incense. It is also believed to be used in some traditional medicines.

What is the difference between dolphins and whales?

Dolphins have a very different body shape in comparison to whales – dolphins are leaner with torpedo shaped bodies and elongated beaks. Common species that are often called whales but are actually dolphins include Killer Whales, Pilot Whales, and False Killer Whales.

What are those mammals?

Mammals include humans and all other animals that are warm-blooded vertebrates (vertebrates have backbones) with hair. They feed their young with milk and have a more well-developed brain than other types of animals. Aardvark. Aardvark.

Are seahorses mammals?

I'm mammal-centric and I'm not sorry. Anyhow, the seahorse is a weird little fish, but it is indeed a fish. ... Mammals can be sea creatures, of course. Whales and dolphins are both mammals who produce milk and breathe air instead of water.

Are whales mammals like dolphins?

Whales and porpoises are also mammals. There are 75 species of dolphins, whales, and porpoises living in the ocean. They are the only mammals, other than manatees, that spend their entire lives in the water.

Why are mammals considered as the highest and most successful of all the animals?

The mammals are the most successful and dominant animals today. They thrive very well in most environment of the world - polar ice caps, deserts, oceans, mountains, forests, grasslands and dark-caves. ... Unique mammalian characteristics are : (a) Body covered with hair.

Why mammals are considered more intelligent as compared to other animals?

In mammals brain is well developed with large sized cerebrum, four optic lobes and a nervous band called corpus callosum. Grey matter is more developed which makes them more intelligent among all.

Why are mammals categorized together?

Scientists classify animals into groups based on common characteristics. Mammals are a group of animals (vertebrates) that have backbones and hair or fur. They are warm-blooded (endothermic), and they have four-chambered hearts. They also feed their young with milk from the mother's body.