I'm not sure specifically which 'emma whale true story' you're referring to. There could be many stories related to a whale named Emma. It might be a story about her life in the ocean, her interactions with other sea creatures, or perhaps a story about a particular event she was involved in.
Well, opinions on this vary. From a religious perspective, it's often taken as a true account with deep spiritual significance. But from a strictly historical or scientific viewpoint, there's no concrete evidence to prove its literal truth.