Quantum teleportation and entanglement swapping viewed from different moving frames

It is shown that quantum teleportation and entanglement swapping can be eas ily derived from Einstein, Podolsky and Rosen correlations and special rela tivity (SR). A recent proposal of entanglement swapping via delayed-choice experiment is discussed by means of a concrete example. Experiments in deco herence in high-Q cavities are briefly examined from the point of view of S R. It is argued that although decoherence can explain why we never see a Sc hrodinger 'cat' which is dead and alive at the same time, this approach app arently does little to explain the cat's 'real' state.