If you're nervous about the sea or have a cruise booked soon, you might want to look away now.
We all know that huge winds can mean scarily high waves at sea and make for a rocky journey, but now we can actually see what that looks like thanks to two passengers on board on a cruise ship that was repeatedly submerged under waves.
The Royal Caribbean's Anthem Of The Seas cruise ship, which holds around 4,500 guests and 1,600 crew, was travelling from New Jersey heading to Port Canaveral in Florida before it was caught in the 120mph storm.
In the video, we see what starts out as a smooth journey, with the sea being calm and peaceful. Yet as the video continues and the journey for the ship gets more difficult, the waves get choppier and it becomes clear the storm isn't going to ease off.
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At one point in the footage, the camera watches out the window as one of the passengers points out that the sea "looks black" with the storm, as well as noticing how high the waves had risen.
In another segment, they point out how much the boat appears to have tipped, meaning walking around the deck looked odd and meant you needed to tilt yourself.
Then in another clip they show waves hitting their window, submerging them into darkness for several seconds before rising again.
Pointing out that they're on the third floor but still going under, the waves are thought to have hit over 30 feet.
Shared on YouTube, the footage has had over 20 million views since it was uploaded in March 2017.
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Commenting on the clip, one person said: "Everyone’s freaking out about how crazy the waves look. But imagine being a 1700s sailor and getting caught in a storm like this..."
A second person wrote: "I wasn't freaked out that much. And then the window was covered in a wave for a solid 8 seconds and I was spooked."
However, the footage was originally filmed in February 2016, but it's continued to be discussed on Reddit as one person responded to the video: "I would be puking blood and begging everyone to kill me.."
Another person shared: "That is terrifying."
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While another added: "Excuse me while I have a panic attack." Relatable.
Others pointed out how calm the two men were, as one wrote: "I'm impressed that guy is still smiling after the huge wave covers the entire window."
And a final shared: "This guy is absolutely way too calm about this."
Niamh Spence