text: blue whales? there are recordings of whales going so deep into the ocean that our technology cannot track them. do you think that it is possible for the blue whale to be still alive and residing in that deep of water permanently? not permanently.  being mammals, all whales have to surface from time to time to breathe.  bigger whales can dive deeper and stay down longer.  i suppose nobody knows exactly how deep or how long a blue whale can dive, since we can't track them.