Missing sub: 'Like finding a needle in a haystack'

The search for the missing Titanic submersible has come to a devastating end as debris is found confirming a catastrophic loss of the pressure chamber leading to the deaths of all five people aboard.

This photo provided by OceanGate Expeditions shows a submersible vessel named Titan used to visit the wreckage site of the Titanic. In a race against the clock on the high seas, an expanding international armada of ships and airplanes searched Tuesday, June 20, 2023, for the submersible that vanished in the North Atlantic while taking five people down to the wreck of the Titanic. (OceanGate Expeditions via AP); Top inset: (Top) Arvind Tharunsri, Scuba instructer; (Bottom) Hamish Harding, Stockton Rush, Shahzada Dawood, Suleman Dawood, and Paul-Henri Nargeolet - the passengers of Titan. Credit: AP

Kulasegaram Sanchayan brings the background to this story with comments from a master Scuba diving instructor, Aravind Tharunsri.

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