Thalassophobia, like many other phobias, is a response to a particular stimulus. Unlike aquaphobia, a general fear of water, thalassophobia deals specifically with the unknown possibilities associated with the open sea. Thalassophobia can include fear of waves and large bodies of water. As with many other phobias, there are plenty of movies that can cause discomfort to those who have thalassophobia. Some are pretty obvious; others are perhaps a little less so.
The following still images from sea-themed films shouldn't be overly triggering for those who have this specific phobia; however, sitting through a two-hour deep-sea adventure might cause someone to spiral. The ocean is vast and filled with mystery - these films only address a small portion of what lies beneath the surface.
Open Water might manage to trigger thalassophobia with its title alone. The film is based on the real-life account of two scuba divers who are left behind to fend for themselves when their dive boat fails to take an accurate headcount. Basically, Open Water is the worst film imaginable for thalassophobes.
On top of the film's true-life inspiration and the aforementioned open water, the creators filmed with real sharks.
Actors: Saul Stein, Blanchard Ryan, Daniel Travis, Estelle Lau, Michael E. Williamson, + more
Initial Release: 2003
Directed by: Chris Kentis
While the surface of the ocean is terrifying, what's underneath can be much worse. The movie 47 Meters Down (2017) utilizes the same premise as other aquatic horror films, but it does them one better by stranding its two actresses not just in the ocean with sharks - but beneath it.
When two sisters vacation in Mexico, they're talked into cage diving to see sharks up close. Of course, something inevitably goes wrong, and the cage ends up sinking to the bottom of the ocean, surrounded by sharks.
Actors: Mandy Moore, Claire Holt, Chris J. Johnson, Yani Gellman, Santiago Segura, + more
Directed by: Johannes Roberts
While sailing to Indonesia, a group of friends capsize their boat and try to swim to a nearby island. Unfortunately, the water is also inhabited by a great white shark. This harrowing Australian survival film - the second from writer-director Andrew Traucki - is based on a true story.
The real-life origins of this open-ocean horror story are sure to make it even more terrifying for thalassophobes.
Actors: Zoe Naylor, Adrienne Pickering, Gyton Grantley, Damian Walshe-Howling, Kieran Darcy-Smith, + more
Initial Release: 2010
Directed by: Andrew Traucki
Steven Spielberg's Jaws famously contributed to a decline in beach attendance after the film's release. In fact, one of its taglines promised, "You'll never go in the water again." The film is heralded as a timeless classic thanks to Spielberg's masterful use of tension, as well as the movie's reliance on practical effects.
Fortunately (or perhaps unfortunately for thalassophobes), the practical effects have managed to hold up over time, meaning the film continues to terrify new generations of beach-goers.
Actors: Steven Spielberg, Richard Dreyfuss, Roy Scheider, Robert Shaw, John Searle, + more
Initial Release: 1975
Directed by: Steven Spielberg