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Are whales mammals or fish?

Whales, along with dolphins and porpoises, are warm-blooded mammals and breathe air like humans do.

There are some significant differences between whales and fish:

Whales are warm blooded. Fish are cold blooded.

Whales breathe air through lungs. Fish use gills to extract air from water.

Whales give birth to live young. Most fish (with some exceptions) lay eggs.

The tail of a whale moves up and down. The tail of a fish moves from side to side.

Other marine mammals include seals, fur seals, sealions, dugongs, manatees, walruses, sea otters and even polar bears!

Humpback whale tail

What is a whale shark?

A whale shark is a fish. It is the largest member of the shark family. Like many large whales it feeds on tiny creatures in the ocean such as plankton.

Amazing facts about whales and dolphins

Dive deeper into the world of whales and dolphins and learn more about their lives.

A humpback whale pokes its head partway out of the water, a behavior called spyhopping

Facts about whales

Amazing facts about whales, the largest mammals to live on Earth.

two dolphins diving down out of the water

Facts about dolphins

From the orca to the tiny vaquita, learn more about these creatures.

Northern Resident orca, Fife, swimming at the surface

Record breakers

Whales and dolphins hold some incredible records.

Breaching North Atlantic right whale

Brain power

Just how intelligent are whales and dolphins?

Make a difference

Join our team  - no matter which way you choose, your commitment helps whales, dolphins, and our shared planet.

Save the whales, save the world.

Humpback whale spyhop

Adopt

Adopt a whale and help us protect these amazing creatures.

Bottlenose dolphin calf breaching with its whole body out of the water

Join

You can join our team and help us save whales and dolphins

Breaching North Atlantic right whale

Donate

Your gifts help us take action for whales and dolphins.

Orca spyhop

Shop

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