I think there are two different ethical questions here. One is the removal of artifacts, and the other is the diving of wrecks with substantial loss of life, with a secondary question of casualties of war.
With artifacts, my position is that, if they are of significant historical value, removing them and making them available to archaeologists or historians is appropriate. If there are no unanswered questions about the wreck, and it is not of enough age to make the artifacts valuable for historical understanding, leave them alone. Removing them is no different from chipping fossils out of claybanks at a National Park.
As far as diving wrecks with significant loss of life, or war graves . . . It's a personal decision. I have visited Gettysburg, which was the site of a huge loss of life, and no one thinks that going there and viewing the site is inappropriate. I have also visited Bergen Belsen, and listened to the sadness in the wind there. Of course, the bodies aren't visible . . . but they aren't visible on the Salem Express, a ferry wreck I dove in the Red Sea. A thousand people lost their lives in that accident, and the reminders of those lives and deaths are everywhere, on the sea floor and in the holds. I found the wreck incredibly sad, and I'm not sure I would dive it again, but I don't think there was anything inappropriate about doing so. Had we rifled through the suitcases to find mementos, I would feel very different about it.
I think you dive wrecks with loss of life with respect, but I see no reason not to dive them.
With artifacts, my position is that, if they are of significant historical value, removing them and making them available to archaeologists or historians is appropriate. If there are no unanswered questions about the wreck, and it is not of enough age to make the artifacts valuable for historical understanding, leave them alone. Removing them is no different from chipping fossils out of claybanks at a National Park.
As far as diving wrecks with significant loss of life, or war graves . . . It's a personal decision. I have visited Gettysburg, which was the site of a huge loss of life, and no one thinks that going there and viewing the site is inappropriate. I have also visited Bergen Belsen, and listened to the sadness in the wind there. Of course, the bodies aren't visible . . . but they aren't visible on the Salem Express, a ferry wreck I dove in the Red Sea. A thousand people lost their lives in that accident, and the reminders of those lives and deaths are everywhere, on the sea floor and in the holds. I found the wreck incredibly sad, and I'm not sure I would dive it again, but I don't think there was anything inappropriate about doing so. Had we rifled through the suitcases to find mementos, I would feel very different about it.
I think you dive wrecks with loss of life with respect, but I see no reason not to dive them.