Thalassophobia

Thalassophobia (from Ancient Greek θάλασσα (thálassa), meaning "sea", and φόβος (phóbos), meaning "fear") is the persistent and intense fear of deep bodies of water, such as the ocean, seas, or lakes. Though related, thalassophobia should not be confused with aquaphobia, which is classified as the fear of water itself. Thalassophobia can include fears of being in deep bodies of water, the vastness of the sea, sea waves, aquatic animals, and great distance from land.

The causes of thalassophobia are not clear and are a subject of research by medical professionals as they can vary greatly between individuals. Researchers have proposed that the fear of large bodies of water is partly a human evolutionary response, and may also be related to popular culture influences which induce fright and distress. It is also theorized that the underlying psychology of the phobia stems from the symbolic nature of water. Specifically, the vastness of the sea is often connected to one's deep unconscious.

The severity of thalassophobia and the signs and symptoms associated with it are quite fluid and complex. People with thalassophobia go through numerous episodes of emotional and physical anguish caused by a variety of triggers. Treatment may comprise a combination of therapy and anxiolytics, and is most effective when administered to patients during childhood when thalassophobia is generally at its peak.

The fear of large bodies of water is thought to be an evolutionary and ancestral trait passed on from generation to generation. Humans prefer certainty to risk and adapt based on learning history and situational variables. A 2016 study by Nicholas Carleton establishes that the ‘Fear of Unknown’ is an evolutionary mechanism that has driven the survival of the human species since the beginning. Showing fear toward deep bodies of water is in effect justified since in ancient times humans understood that their survival was reliant on remaining in terrestrial land and not aquatic environments. This in return developed into a fundamental fear passing down from generation to generation to ensure the survival of human kind.

Martin Antony, Professor of Psychology at Toronto Metropolitan University and co-author of The Anti-Anxiety Workbook, states that: "[f]rom an evolutionary perspective, it makes sense that humans would develop a tendency to fear and avoid deep water because of all the associated risks". He continues by commenting on the genetic aspect of fears, saying: "[w]e are essentially 'programmed' through evolution to fear some situations (e.g., heights, deep water, snakes) more easily than others (e.g., flowers, teddy bears)"

In Jewish and Christian belief systems, the sea is often depicted as a space of disaster and punishment. This is evident in the first book of the Bible (Genesis), through stories such as those of Noah's Ark. Texts like William Shakespeare's The Tempest featured a shipwreck as the driving force behind its narrative and gave the sea an "otherworldly" and "evil" personification.^{[citation needed]} Authors of Beasts of the Deep: Sea Creatures and Popular Culture Sean Harrington and Jon Hackett believe that these narratives are a driving force for the widespread fear of oceans. Literature of the gothic and supernatural have gravitated toward the sea as a fertile environment, and as a result create an unpleasant and fearful image in the minds of audiences. This is thought to be true for both ancient and contemporary societies. The 1975 blockbuster film Jaws is often cited, by pop-culture commentators and moviegoers alike, as the source of a "social contagion" of thalassophobia. The mainstream media also affects the collective emotions of the public. News reports of great white sharks, eels, or other dangerous sea predators attacking swimmers in the ocean induce fear in viewers and are thought to have great influence. Similarly, real cases of ships like the Titanic sinking with their passengers drowning have been made terrifyingly realistic through their movie versions. People who are very afraid of violent death or particularly of drowning are also more likely to develop thalassophobia. These cultural influences (both ancient and modern) are thought to have added to the prevalence of the fear of deep bodies of water throughout time.

A negative or past traumatic event can also trigger a deep fear of oceans. Traumatic experiences of being frightened while swimming, or almost drowning are also leading causes of thalassophobia. In addition to this, observing others, particularly parental figures and other influential adults, who also had a fear of deep water are considered contributing factors for developing thalassophobia later in life. Scientists also believe that genetics and biological heredity play a major role in attaining a fear of seas, oceans, and lakes. Such genetic factors include having a family member with thalassophobia, personal mental state such as being negative, sensitive, or anxious, and even hearing terrifying stories on water accidents. Personal experiences and one's upbringing are all factors that could potentially be the cause of thalassophobia.

Thalassophobia is often explained as a primal fear. Considering that humans are land mammals and we rely on our eyesight to collect food, it is evolutionarily coded into our lives that the deep sea opposes that environment. Marc Carlin explains the phobia as, “We all have this fear of darkness because we can’t see and we rely on our vision to protect us. If you shut your eyes and you can’t see, now you have to rely on senses that you don’t normally rely upon.” He goes on to explain that without using the senses that we normally use, it puts us at a deficit, causing a fear of the dark and deepness.