Why Should We Still Have to Retrieve Black Boxes from Airplane Crashes?

עברית: קופסאות שחורות

Does anyone know why the information being recorded by the ‘black box’ and the cockpit voice recorder cannot be streamed to an offsite storage site? It seems to me that there ought to be a way to do this even from remote mid-ocean flight routes. We wouldn’t have to wait for the searchers or the divers to locate the devices in the wreckage. I’m sure there’s a good reason this isn’t being done; I just can’t imagine what it might be. Anyone?