Why do whales jump out of the sea into the air?

New research suggests it might be a form of communication...

Updated: 

Anyone lucky enough to see a massive whale leap through the air must have wondered why it does it.

See also: Whale's amazing breach right next to kayakers

See also: Blue whale upstages news reporter


And new research from Australia might have the answer.

Baby humpback whale rescue in Australia

Baby humpback whale rescue in Australia