Audio from search reveals banging sounds later identified as debris from Titanic wreck during Titan submersible implosion in 2023, killing five.

Newly-released audio reveals the banging sounds heard during the search for the Titan submersible, destroyed by an implosion in 2023, killing five crew members. The hollow sounds were initially a source of hope for survivors but were later determined to be likely debris and junk from the Titanic wreck. The audio will feature in a new documentary, "Minute by Minute: The Titan Sub Disaster," commemorating the disaster's first anniversary.