Pretty neat...and yes, I would be curious to see the results of an analysis of a sample.
Being 'stored' for so long out of the light and in the cold environment of the sea floor, the results of the analysis could be very interesting indeed. A tasting would certainly not deliver the true original flavor of the product, but given the enhanced preservation environment of the apparently well sealed bottles, a taste would at least give some clear hints as to what this beer once was.
Really fascinating.