A North East university lecturer - who was the first British diver to see the Titanic wreck - has said it is a "dangerous" and "hostile" place to be.
Dik Barton, a lecturer at the University of Sunderland, made 22 dives to the wreck to recover artefacts when he was head of operations with RMS Titanic Inc, a US firm which salvaged the site. On Wednesday, he told ITV's Good Morning Britain he has "100%" felt in danger during previous expeditions to the wreck site.
A rescue mission is under way to try to reach a submersible with five people on board which went missing near the Titanic wreck since Sunday.
