Actually, the bible said it was a great fish, not a whale. And YES, I do happen to believe Jonah survived three days in his belly before he was vomited out onto the ground. The story is pretty plain don't you think? If you discount the story of Jonah, what other parts of the bible are you going to throw out as untrue? If you throw out one part, you may as well throw it all out - it is foolishness to those that are perishing.