This is one of the first videos I ever made. This is the wreck of The Hebe, a Danish Freighter sunk off the coast of South Carolina. It sank after running into the St. Cathan, a British sub-chaser during maneuvers in blackout conditions during WWII. Everyone on the Hebe survived, but all hands on the St. Cathan were lost. It is by far the most powerful wreck dive I've ever done.
There is definitely a difference between a wreck and an artificial reef.