I still don't understand why it was burried just because it was a tragedy. Was there some practical concern that bodies might slowly creep out of the wreck onto the surface or that people would loot it?
It's lying at 50-70 metres deep. If it is not recovered, the "grave" is open so to speech for curious divers, and that was very much not desired. Either recover it or bury it.
The Titanic was different; it lies below 4000 metres of water.
