As the saying goes 'everyone is afraid of something', but when it comes to phobias there are a few which are extremely unusual.
One of the phobias you've almost certainly not heard about is submechanophobia, the fear of man-made objects being partially or completely submerged in water.
Basically, if the sight of something people have made being underwater makes you uneasy or even scared then you might have this particularly rare phobia.
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It's by no means the strangest phobia out there, as there are people scared of balloons, Scottish accents, chewing food, overflowing baths and the late singer Michael Jackson.
If it exists or has existed then there's a good chance that someone in the world has been scared of it at some point, so the idea of a person afraid of seeing things submerged in water isn't too far fetched.
It's possible that you yourself might even have this phobia without realising it, because really in your day to day life, how often do you look at things which are submerged in water?
The video above, compiled by TikTokers @br1ghtfacts, has a selection of images which someone with submechanophobia would find scary or unsettling. So, if you look through them and feel creeped out, it's possible you just found out a little more about yourself.
Some people who've taken the test have realised how scary it actually can be to gaze upon the images of man's creations having been claimed by the water.
Pictures of sunken statues, abandoned mineshafts flooded with water, the debris of abandoned ships and a stairway leading down beneath an icy surface and into dark water were all part of the test.
However, there was one picture in particular that was setting people off whether they had submechanophobia or not, and it was the image of a sunken statue.
One person said the jump scare it gave them had them feeling like their 'soul left my body for a second'.
Lots of other people taking the test who weren't put off by the other images were still scared by the submerged statue.
Others watching the whole thing wondered 'why am I getting scared' and admitted they 'flinched' when looking through the images.
For some, it confirmed that they 'don't have that phobia', while there were a few who thought they might actually have discovered a new phobia they didn't realise they had.
Someone else said they were 'scared of what's in the dark' and since many submerged objects stray far from a source of light it can give a mundane item a significantly more creepy aspect.
Joe Harker