How to ship a whale. By CR2.
Lease a B747F with a nose-cargo door. (Ie a real freighter, not a converted pax aircraft).
Have a damned strong custom built tank constructed. Put water in tank, but not too much. Said tank should be max 238.5' long, 96' wide and no more than 60-70' high. Attendants willl need to be able to reach in to the tank to slop water over the beast and rub it with grease so it doesn't dry out. This lot will weigh about 25T when all said and done. (Make sure the shipper puts whale into tank before getting to airport. Any mishaps will be shipper's problem. Picking a whale up with a crane and dropping it on the ramp is bad public relations).
Ensure qualified vets/handlers available to take care of the animal during flight. Give some training to said people concerning portable oxygen there are no drop down masks on the main deck (as an example), or how to get out of the aircraft quick (follow the Loadmaster).
Ensure ground handling at the airports you want to fly from/to can handle such an item. Make sure everything is ready to go, before the whale shows up at the airport, and make sure everything is ready to roll at the other end as the aircraft touches down.
1992 BCN-SAN, B747-200C. All went tickey-boo.
Did a white rhino too... but my best one is the one that never happened. 100T of gold bullion from MNL to ZRH. Cancelled at the last minute, shipper couldn't pay for the flight.