Quantum teleportation is a reasonably well-defined physical process, whereby a quantum state is transferred between two separated entities that already share an entangled state. It's been demonstrated experimentally, and applications have been dreamed up. My question is: does this phenomenon occur "naturally" at all? Or is it in the category of things that, to the best of our knowledge, have only ever happened as a result of human ingenuity?
(I leave open the question of how exact the state transfer should be. Examples where teleportation explains something interesting about a system's behaviour would be ideal.)