Reddit has long been the home of the niche, the gross, the grim, the demonstrably insane...
But here's a subreddit thats guaranteed to ruin your next summer holiday.
'The Depths Below' is, according to its own bio, "dedicated to showcasing the strange, creepy and horrifying things that exist just below the surface of the water".
If it seems like something that just shouldn't be found in the oceans, lakes, or rivers of the world, then this is where it belongs.
Happy swimming, and remember- There's always something below you.
Right, thanks for that Reddit.
As if 2017 wasn't nightmarish enough, try these horrors, some real, some imagined.