Kerr Avon
Master Member
It's not a "twist ending;" it's an alternate accounting of the shipwreck that Pi tells the investigators when they don't believe his story about the tiger and the floating island. In the film, we don't see any of the alternate account play out on screen. It's just the camera focused on the actor for one several-minute shot while he recounts the bare-bones outline.
It's a twist ending because at the end he admits he lied about the details, that it wasn't animals on the boat, it was a bunch of people who cannibalized each other murderously all along.