Never-before-seen video of the Titanic wreckage to be released nearly 40 years after its discovery

• The Woods Hole Oceanographic Institution says it will release 1986 footage of the Titanic on Wednesday.
• According to the AP, some of the footage has still yet to be seen by the public.

New footage from a 1986 dive down to explore the wreckage of the Titanic is expected to be released Wednesday evening.

The 80-minute uncut and unnarrated video, which will be uploaded by the Woods Hole Oceanographic Institution to WHOI's YouTube channel at 7:30 p.m. ET Wednesday, captures some never-before-seen images of the ocean liner that sank, killing about 1,500 in April 1912, according to AP News.

On its maiden voyage, the Titanic left Southampton, England, bound for New York City, but the ship hit an iceberg and sank off the coast of Newfoundland in the Atlantic Ocean. Nearly 80 years later, in 1985, a team from WHOI and a French oceanographic exploration organization discovered the ship 12,000 feet below the surface, per AP.

Footage from a three-person dive team that explored the ship's wreckage in 1986 is being released Wednesday to the public to mark the 25th anniversary of James Cameron's Academy Award-winning film "Titanic."

"More than a century after the loss of Titanic, the human stories embodied in the great ship continue to resonate," Cameron said in a statement, according to AP.

He said he was "transfixed" by the discoveries on the Titanic and that the footage helps "tell an important part of a story that spans generations and circles the globe."

One Titanic historian hobbyist told Insider, "The Titanic is such a phenomenon that any new information you can get from it is instantly intriguing. It's one of the mysteries to occur in the ocean, which is already a mystery in itself," she said.