How often does a blue whale come above the surface to breath?

Question: How often does a blue whale come above the surface to breath?
- Keywords:
  animal,
  respiration,
  whale
Asked by beth.nicholls to Angela, Claire, Ian, Robert, Sarah on 12 Nov 2014.
- Angela Stokes answered on 12 Nov 2014:
  
  Hi _bethnicholls_
  I am remembering from memory because a few years ago I went whale watching in the Atlantic Ocean while on holiday. I think I remember hearing that Blue Whales have two blow holes and at rest breathe air at the surface of the water about 1-4 times per minute and after a deep dive around 5-12 times per minute.

Question: How often does a blue whale come above the surface to breath?