Being swallowed by a whale is not something that often crosses my mind. 
Who am I kidding?  It's never crossed my mind.  I'm more worried about
sharks.  But, I suppose it is something that could happen--and the results are quite surprising in this video (with some remarkable footage!) posted by BBC Earth Unplugged on July 31, 2013:


I don't know if I would survive; my heart would give out way before then.  But you have to admit: that would be quite a majestic way to go.  And if you did survive, you'd have quite a tale to tell the kids!

More incredible animal videos can be found here!