The blue whale holds the title as the largest animal ever known to have lived on Earth. This video explores how big blue whales can grow, how they survive in the ocean, and what makes them such ...

Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest invertebrates ever.

Our beloved planet has seen giants that dwarf most animals alive today. These massive creatures lived across different time periods and belonged to all kinds of environments, including deep oceans and ...

The 19-metre-long Nanaimoteuthis haggarti was a fearsome carnivore eating fish, crustaceans and many other sea creatures.

During the Cretaceous, 19-metre-long predatory octopuses swam the seas, and evidence from their fossilised remains suggest ...

Add Yahoo as a preferred source to see more of our stories on Google. The blue whale holds the title as the largest animal ever known to have lived on Earth. This video explores how big blue whales ...