When I was younger, I was fascinated by the story of the Titanic disaster. The deep ocean seemed like such a wild unexplored place and to know that there was essentially "buried treasure" there in the form of a grand sunken ship was just the stuff my young mind needed to be engaged in learning about this important part of maritime history.
Since then I've kept up with the Titanic expeditions (some led by James Cameron) and have always been incredibly interested in the finds they dig up there. Old rooms, artifacts, decaying ship parts, ocean floor sediment patterns, etc. You get the idea. The Titanic is not just a relic on the ocean floor but a doorway into ocean discovery itself. Maybe that's why I like it.
Anyway, there's this video here that shows the Titanic disaster in real-time along with CGI of the ship in water. It's a long video, about 2 hours, but it's a neat way to depict the events of that night on April 15, 1912 without going through the dramatic love story of films centered around the ship.