I often wondered about the bodies inside the Arizona.
There was a great debate about this following December 7th. The Army wanted to make the effort to account for all of the bodies in general whereas the Navy was more concerned with not loosing any more sailors. Conditions inside the Arizona were incredibly dangerous. The stern was intact but the forward half of the ship was not. It was a jumble of jagged metal and slag, all of which could tangle and cut the air hoses and divers. The fuel oil cells had ruptured and the interior was awash in oil, making each dive almost completely blacked out. It's amazing that the Navy didn't lose more divers than they did.
If you read Edward C. Raymer's "Descent Into Darkness" you will come across a passage that describes an attempt to recover bodies from the Arizona. The bodies were badly decomposed and the divers had to haul them out of the ship one at a time and cast them to the surface where they were hauled up and placed in body bags. Their bodies were bloated and skin would slough off when handled. Many, if not most of the bodies were never identified due to the state of decomposition. Several crew members "fed the fishes" repeatedly due to the grisly nature of the work.
The Navy's position, and the Army's too after this one or two day attempt, was that it was far more dignified to leave the crew entombed in the ship. No serious attempt was ever planned for the Arizona and so there was no need to recover the bodies. At most, it was thought to raise the stern, but even this proved to be far more dangerous and expensive than it was worth. Mariner's have had a tradition of burial at sea, and leaving those entombed inside Arizona to be fits with the traditions of not only the US Navy, but that of sailors the world over.