Facts, figures & multimedia

Whales and dolphins are amazing. Find out incredible facts about their lives under the sea.

Which is the biggest whale? The smallest dolphin? How far do whales migrate? Which whale makes the loudest sound? Do they sleep? Just some of the questions you will find answers to along with many others.

Amazing facts about whales and dolphins

Why do whale and dolphin tails go up and down?

Why do whale and dolphin tails go up and down?

Which is the largest whale species?

Which is the largest whale species?

Where do dolphins live?

Where do dolphins live?

What is baleen?

What is baleen?

What is a group of dolphins called?

What is a group of dolphins called?

What do dolphins eat?

What do dolphins eat?

What are the differences between whales, dolphins and porpoises?

What are the differences between whales, dolphins and porpoises?

How many teeth do dolphins have?

How many teeth do dolphins have?

How many species of dolphins are there?

How many species of dolphins are there?

How long do dolphins live?

How long do dolphins live?

How intelligent are dolphins?

How intelligent are dolphins?

How do whales and dolphins breathe?

How do whales and dolphins breathe?

How do dolphins sleep?

How do dolphins sleep?

How do dolphins give birth?

How do dolphins give birth?

How do dolphins communicate?

How do dolphins communicate?

How did whales evolve?

How did whales evolve?

How are dolphins different from fish?

How are dolphins different from fish?

Do whales and dolphins have hair?

Do whales and dolphins have hair?

Do whales and dolphins have families?

Do whales and dolphins have families?

Do whales and dolphins grieve for their dead?

Do whales and dolphins grieve for their dead?

Can dolphins fight off sharks?

Can dolphins fight off sharks?

Record breakers

Longest baleen
m
belongs to a bowhead whale
Loudest sound
db
made by a sperm whale
Fastest baleen whale
kph
achieved by a fin whale
Deepest dive
m
by a Cuvier's beaked whale
The longest tooth
m
belongs to a narwhal
Longest recorded journey
km
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

Help protect whales and dolphins and their homes

By adopting a whale or dolphin, by making a donation, or by fundraising for WDC, you can help us save these amazing creatures.

Orca - Rob Lott

Adopt

Adopt a whale and follow the lives of these amazing creatures.

Bottlenose dolphins leaping

Donate

Your support helps us take action to protect their homes.

Humpback whale spyhop

Fundraise

Run, bake, walk, cycle… what could you do to help?