Latest research shows the humpback whales’ song to be a weapon used in verbal exchanges between bulls fighting over females. These battles can sometimes turn physical, sometimes endangering mothers with vulnerable calves.

• DirectorRick Rosenthal
• Release3 December 1997
• Genre
  Documentary / TV Movie
• Duration0h 46m
• Budget?
• Revenue?
• Rate
  

  -
  0 reviews
• Productions

  BBC