A video simulating the experience of drowning has given viewers a horrifying glimpse into what it might be like - and it might just keep you on dry land for now.
Known by the terrifying moniker the 'drowning simulator', the nightmare-fuel YouTube video begins with a man who falls into the water after being forced off his boat by a rogue sail.
Warning: Graphic content
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With no way of getting back onto his boat after high winds and the large boat's boom knock him into the depths - he's alone and scared in the deep blue sea.
It's a truly terrifying and realistic POV.
As would probably be your first port of call after the boat very quickly floats away, the simulated victim can be heard screaming and shouting for someone to come and help - hoping for a miracle passer-by in the open ocean.
Calling for his friend 'Charles' to help him as he makes a desperate bid to stay afloat amid the panic - it soon becomes clear that all hope (and his friend) is gone.
While he is able to keep his head above the water with some success, slowly but surely be begins to sink beneath the surface.
Eventually, his breathing can be heard getting more laboured before he completely sinks.
While he does manage to come up for a few desperate laboured breaths, when he realises that his friend is completely gone, he begins to shout out, realising that there is likely little hope of rescue.
It's at this point the simulator gets really distressing and the man's movements slow down as his lungs fill with water.
The video then ends by revealing that once submerged, the man died after four minutes and 20 seconds.
The simulator then warned that the human body tires a lot faster than people think and that's why you should always wear a lifejacket at sea.
As you can imagine, the video garnered quite a reaction on YouTube.
One viewer wrote: "My biggest fear in that situation would still be a that shark is near."
"Imagine playing this game in VR tho," speculated a second, while a third observed: "The fact that someone took the time to represent a real drowning so accurately is concerning yet amazing at the same time."
A fourth revealed: "My dad passed away from getting drowned deep in the ocean.
"I’ve been watching this video every now and then to experience and to know what it was like for him amidst drowning.
"In the span of time we were patiently waiting during the search and rescue operation, I couldn't stop thinking how lonely it must’ve been for him - how terrifying it must've been."
Amelia Jones