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Facts, figures, & videos

Whales and dolphins are amazing. Find out incredible facts about their lives under the sea. Which is the biggest whale? The smallest porpoise? How far do whales migrate? Which whale makes the loudest sound? Do they sleep?

A life under the sea

Facts about whales

Find out about the lives of the largest creatures living on the planet. Learn about whale migrations, the different types of whales and who has the biggest brain.

Facts about dolphins and porpoises

Dolphins and porpoises come in all different sizes. From the magnificent orca to the tiny vaquita, dive into their world and learn more.


Which whale is the heaviest? Which one dives the deepest? The longest migration? Whales and dolphins hold some amazing records. Dive in and find out more and these incredible creatures.

Your favourite questions about whales and dolphins...

How do dolphins sleep?

How do dolphins give birth?

How do dolphins communicate?

Baleen Whale anatomy

How did whales evolve?

How are dolphins different from fish?

Record breakers

Longest baleen
belongs to a bowhead whale
Loudest sound
made by a sperm whale
Fastest baleen whale
achieved by a fin whale
Deepest dive
by a Cuvier's beaked whale
The longest tooth
belongs to a narwhal
Longest migration
made by a gray whale

Videos from the wild

A selection of our favourite videos from the WDC archives. You can watch more on our YouTube channel.

False killer whales

Risso’s dolphins

Spotted 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 a whale and help us protect these amazing creatures.

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


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

Breaching North Atlantic right whale


Your gifts help us take action for whales and dolphins.

Orca spyhop


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