Why is a dolphin a mammal not a fish?

Why is a dolphin a mammal not a fish?

Dolphins are mammals, not fish. 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.

Is the Dolphin a mammal or a fish?

Dolphins are mammals, not fish Credit: Dolphin Ecology Project – Under Authority of NOAA Fisheries Permit #911-1722-00 E ven though they live in the ocean all of the time, dolphins are mammals, not fish.

How are dolphins different from whales and porpoises?

Dolphins are mammals, not fish. Also, like all mammals, dolphins even have a tiny amount of hair, right around the blowhole, which is a little different than the scales of a fish. Whales and porpoises are also mammals. There are 75 species of dolphins, whales, and porpoises living in the ocean.

Is the eastern spinner dolphin a fish or a mammal?

Dolphins are mammals, not fish. The Eastern Spinner Dolphin is distinguished by its triangular dorsal fin and uniform gray color.

Are there whales and dolphins in the ocean?

Dolphins are mammals, not fish. 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.

Dolphins are mammals, not fish Credit: Dolphin Ecology Project – Under Authority of NOAA Fisheries Permit #911-1722-00 E ven though they live in the ocean all of the time, dolphins are mammals, not fish.

How are sharks different from whales and dolphins?

Others think they are mammals because they are so similar in body shape to whales and dolphins. This may or may not surprise you, but sharks are actually in the fish family. While sharks do have a backbone, which reptiles have as well, sharks do not breathe air as reptiles do.

Unlike a dolphin, it breathes using gills, and doesn’t have to come to the surface for air. What is a dolphin? Dolphins, along with whales and porpoises, are members of a group of mammals called Cetacea. Members of this group are known as Cetaceans. They are mammals that have adapted to an aquatic lifestyle.

How are the forelimbs of a dolphin similar to other mammals?

The forelimbs of a dolphin are anatomically equivalent to the forelimbs of other mammals (for example, they are analogous to arms in humans). But the bones within the forelimbs of dolphins have been shortened and made more rigid by supporting connective tissue. Pectoral flippers enable dolphins to steer and modulate their speed.