HMS Terror has been found well preserved in 11 meters of water. It appears her crew had taken time while abandoning her, so perhaps she was caught in the ice, and the crew then removed useful items and tried to make for home on HMS Erebus.
The discovery of the two ships has been a mix of science and story. Research vessels had been following Inuit oral tradition, and the first sighting was made by an Inut fisherman who later crewed on the research vessel that confirmed the find. Some 150 years after the expedition, the Terror was still sitting proud on the ocean floor, with her mast above the water for Sammy Kogvik to find when he was fishing. 6 years later, that find is confirmed.
I wonder how the passengers and crew of the Crystal Serenity are taking the news of this find. She entered Bar Harbor, Maine yesterday after cruising the Northwest Passage this summer.