Yes, this is a purple whale. And yes, it is flying. ='3
Let me just say that this is something the girl (the one on the back of the whale) is dreaming and stuff. I actually hope to use this in an animation someday, if I can like, think of a decent little story to go with it. ='D
Also, you can see a detail of the girl here: [link]
Done in oekaki on September 8, 2005.