How did whales get so big? How do they manage to support such ... To study lunge-feeding behaviour blue whales are tagged with cameras. Rorquals are some of the largest whales on the planet ...

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be found in every ocean ...

The wildlife documentary series narrated by David Attenborough explores a vast ocean desert where sperm whales must dive 1,000 metres just to feed. Show more The big blue is the world's greatest ...