Forty years on, you can now watch previously unseen footage from the moment the wreck of RMS Titanic was discovered.

Newly released footage of the Titanic wreckage site shows that parts of the boat seem to be deteriorating rapidly. The high resolution video was taken earlier this month during an expedition.

A secret mission. A restless night. A discovery that changed deep-sea exploration — 40 years later, Titanic's story still resonates.