Only image I know that's even close is one Acidic drew. I don't think the prey survives, but is at least somewhat whole. Either way it's gorry and wouldn't normally be my thing, but still on-topic:
Source
GoldFox wrote:I am surprised this hasn't been shared yet: https://www.youtube.com/watch?v=zmgn96uootU
This is from a 1998 film called 'Deep Rising', about a monster attacking an ocean liner. It's got other great vore scenes of people being eaten alive, but this in particular is the scene I think you're looking for.
WARNING: It's super graphic and gory, just saying. Enjoy!