I would be surprised if any recovered bodies are intact for very long once they surface unless special preparations are in place.
When the submarine HMS Thetis was lost on trials in Liverpool Bay in 1939 the bodies of those lost with her were eventually recovered.Initially when they were extracted from the submarine they looked normal but within thirty minutes of recovery they rapidly started decomposing and became unrecognisable.
I suppose that with modern forensic science this is less of a problem but if the corpses have any useful information for the investigators then some kind of refrigeration unit on site would be needed.