From murky rivers to the deep, dark ocean, there's more to fear than just what may be lurking beneath the surface. These unsettling photos are enough to induce our thalassophobia, or intense fear of deep bodies of water.
Vote up the creepiest, most unnerving photos.
1. Peeking Out From The DarknessPhoto: EyesNoEyes__ / Reddit
2. Something's In The WaterPhoto: fancyzoidberg / Reddit
3. These Submerged StairsPhoto: user4cid / Reddit
4. Avoid At All CostsPhoto: dafyddtomas / Reddit
5. Spot The Continental Shelf Dropping OffPhoto: spiiiitfiiiire / Reddit
6. A Growing WavePhoto: xdcutemynutella / Reddit