What are the 5 groups of marine mammals?

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There are five groups of marine mammals: pinnipeds (seals, sea lions, fur seals, and walruses), cetaceans (whales, dolphins, and porpoises), sea otters, sirenians (dugongs and manatees), and polar bears.

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Similarly one may ask, what are the 4 groups of marine mammals?

Marine mammals are classified into four different taxonomic groups: cetaceans (whales, dolphins, and porpoises), pinnipeds (seals, sea lions, and walruses), sirenians (manatees and dugongs), and marine fissipeds (polar bears and sea otters).

Beside above, what characteristics do all marine mammals share? Marine mammals share several characteristics that are common among all mammals such as the need to breathe air, being warm-blooded, having mammary glands which produce milk to feed their young, giving birth to live young (pregnancy/gestation periods) and in some cases having hair.

Keeping this in view, what sea life are mammals?

Marine mammals are aquatic mammals that rely on the ocean and other marine ecosystems for their existence. They include animals such as seals, whales, manatees, sea otters and polar bears.

What type of fish are mammals?

Dolphins, whales, seals, sea lions, and otters are all mammals. They give birth to live young and nurse their young with milk. In contrast, even though some sharks give birth to live young, sharks are fish.

39 Related Question Answers Found

Are Sharks a fish or a mammal?

Sharks are not mammals. Rather, they are a species of fish. Sharks have a skeleton that is entirely composed of cartilage and is equipped with leathery, tough and scale less skin. These skeletons differ greatly from those of the bony fish.

Is dolphin a fish?

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. Dolphins must make frequent trips to the surface of the water to catch a breath.

Is a dolphin a marine mammal?

MARINE MAMMALS - DOLPHINS. Dolphins are cetaceans, which means that they are marine mammals that are in the same class as whales and porpoises. There are nearly 40 different dolphin species.

What is the state marine mammal?

425.5 The California gray whale (Eschrichtius robustus) is the official State Marine Mammal. Taxonomic Hierarchy: California Gray Whale.

Is penguin a mammal?


Penguins have fur to keep warm. Like other birds, penguins have feathers. Penguins are fish, mammals, or amphibians because they live in water, on land, or both. Penguins are birds, even though they spend time on land and in water.

Is salmon a mammal?

Salmon therefore, are not Mammals. Salmon fall into the class Actinopterygii or “Ray Finned Fishes”, having fins supported by bones or “rays”.

Are seals amphibians?

1. one of a class of cold-blooded vertebrates having a usually moist skin without scales. Frogs, toads, newts, and salamanders are amphibians. Crocodiles, seals, and beavers are amphibians.

Is whale a mammal?

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: You have a lot of interesting questions about marine mammals. Dolphins and other whales are all mammals called cetaceans.

How many sea otters are left?


3,000 southern sea otters

Is a bird a mammal?

No, birds are not mammals. Birds do not give birth do live young nor do they feed their young through mammary glands.

What oceans do dolphins live?

Specifically one of the best-known species, the bottlenose dolphin lives in every ocean of the world except the Arctic and the Antarctic oceans. The Atlantic spotted dolphin, lives all over the tropical and temperate areas of the Atlantic Ocean avoiding the Artic and Antartic regions also.

Do whales have hair?

Most of the baleen whales have hair follicles if not visible hair. The location of the hair follicles is similar to the whiskers in terrestrial mammals. Most of these whales lose their hair shortly after birth. Before they're born, they have some hairs on the sides of their rostrum or snout.

Do dolphins have hair?

Yes, all mammals have hair at some point in their lives and a dolphin is no exception. A baby dolphin (calf) is born with whiskers on its upper jaw (rostrum) which fall out soon after birth.

What type of animals live in marine?


Animals of the Marine Biome
  • Fish - Sharks, swordfish, tuna, clown fish, grouper, stingray, flatfish, eels, rockfish, seahorse, sunfish mola, and gars.
  • Marine mammals - Blue whales, seals, walruses, dolphins, manatees, and otters.
  • Mollusks - Octopus, cuttlefish, clams, conch, squids, oysters, slugs, and snails.

Is a sea lion a mammal?

Sea lions and seals are marine mammals, spending a good part of each day in the ocean to find their food. They all have flippers at the end of their limbs to help them swim.

Is a seahorse a fish?

Seahorses are fish. They live in water, breath through gills and have a swim bladder. However they do not have caudal fins and have a long snake-like tail. They also have a neck and a snout that points down.