Fear of the Sea

The argument about why the sea

There is no clinical literature to summarise here, so what the sources carry instead is a set of competing explanations. They are worth laying out because the disagreement is the material.

The evolutionary account is the most cited. Nicholas Carleton's 2016 work established fear of the unknown as a mechanism with survival value, and applied to the sea it says that early humans depended on staying on land. Martin Antony, Professor of Psychology at Toronto Metropolitan University, puts it in terms of readiness: humans are effectively programmed to acquire fear of some situations, deep water among them, more easily than others, and he names flowers and teddy bears as the contrast.

The perceptual account is narrower and more testable. Marc Carlin frames it as sensory deprivation rather than danger: humans rely on sight, and deep water removes it, which forces reliance on senses that are not normally load-bearing. On that reading the fear of deep water and the fear of the dark are the same fear encountered in different media.

The psychoanalytic account is the least constrained. Carl Jung treated water as an archetype in the collective unconscious, a reflection of a person's darkest thoughts. Sean Harrington extends the idea to the sea specifically: what is known of the ocean does not match what it could contain, and the gap fills with sea monsters in the same way the gap between the ego and the whole person fills with dread. It is an interesting analogy and no part of it is measurable.

What the cultural account claims

Sean Harrington and Jon Hackett, in Beasts of the Deep, argue that narrative has done much of the work. Jewish and Christian traditions cast the sea as a place of disaster and judgement, Genesis and the flood among the examples. Shakespeare opens The Tempest with a shipwreck and gives the sea an otherworldly and malevolent character. Gothic and supernatural writing has returned to it repeatedly.

Then there is Jaws. The 1975 film is described by commentators as the source of a social contagion of thalassophobia, and it is the second entry in this catalogue where that film is named as a cause. News coverage of shark attacks and dramatisations of real disasters, the Titanic among them, are held to do the same work at lower intensity.

What triggers it

The list is wider than the sea itself:

• contact with, or the thought of, an ocean or a lake
• boats, swimming, scuba diving and submarines
• sea creatures
• photographs or film of any of them Discussion alone is named as sufficient, without an image. Some people report fearing what the water contains and others the emptiness of it, which are opposite complaints about the same place.

How the general criteria are applied

Thalassophobia has no criteria of its own. What the sources do is apply the DSM-5 specific phobia criteria to deep water: fear that is persistent and out of proportion, present on every exposure, leading to avoidance or to endurance with intense fear, interfering with normal functioning, and lasting six months or more.

The symptom lists are those of any panic response, with two items that stand out as particular to this fear: weeping or running when near deep water, and shouting at the sight of the sea.

What is missing from thalassophobia

No prevalence figure appears anywhere in the material. The causes are described as unclear and as a subject of research, and treatment is described as most effective in childhood, when the fear is said to be at its peak, without a study attached to either claim. For a fear with this much cultural commentary behind it, the clinical record is empty.