On this day last year, the Titan submersible embarked on its doomed mission to the ocean floor.
Just one hour and 45 minutes into the dive down to visit the Titanic wreck, the sub lost contact with its mothership and a desperate rescue mission to find the five people aboard began.
Four days later, it became clear that Titan had tragically imploded on its way down to the wreckage, killing everyone onboard.
Now, a simulation which shows just how deep the Titanic wreck is has revealed the terrifying reality of the group’s environment in their final moments.
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The YouTube clip, which was created by Spanish animation company MetaBallStudios, gradually descends deeper into the water and uses landmarks to demonstrate the depths.
The further the video goes, the deeper it gets, passing the heights of towers including the Eiffel Tower, the Statue of Liberty and the Burj Khalifa - the tallest building in the world.
Finally, we reach the bottom of the Atlantic Ocean at 12,000ft where the Titanic wreckage sits.
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Shocked by the simulation footage, people took to the YouTube comment section to share their thoughts.
One user posted: “The deepness is scary. Imagine going out over the deepest point of the mariana trench and jumping into the water and just floating for a few minutes. Hell no. You are closer to an airliner flying above you than you are to the bottom below you.”
A second used a similar analogy, adding: “If you want an in person perspective to just how deep the ocean is, when your flying in a plane and you reach the planes flying altitude they cruise at, take a look out the window and imagine everything below you is water.”
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A third said: “I'm here because of the missing submersible and just realized why I'm scared of oceans.”
The video shows just how deep the Titan submersible, which was run by US firm OceanGate, was diving when it set off on June 18, 2023.
All five people onboard - Shahzada, Dawood, 48, and his son, Suleman, 19, billionaire Hamish Harding, 58, French explorer, Paul-Henry Nargeolet, 77, and OceanGate chief executive, Stockton Rush, 61 - were killed instantly.
Debris from the sub was discovered just 1,600ft from the bow of the Titanic.
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But the tragedy doesn’t seem to have put people off from searching for a glimpse of the iconic ship themselves.
Recently, American real estate tycoon and billionaire Larry Connor announced that he intends to take another submersible to the depths to explore the Titanic’s remains.
In 2022, Connor paid $55 million to take part in the first fully-private astronaut mission to the International Space Station.