A recording released by the federal government appears to include audio of the implosion of the experimental submersible that went missing on its way to the wreck of the Titanic.

The Titan Submersible was on a tourist expedition to explore the remains of the Titanic when it imploded on June 18, 2023, killing all passengers on board. Wreckage of the vessel was later found scattered across the ocean floor, 330 yards away from the bow of the Titanic, the infamous liner that sank in 1912.

The US Coast Guard released a haunting audio Tuesday of what is believed to be the acoustic signature of the 2023 Titan submersible implosion.