Introduction
Definition of thalassophobia
The word thalassophobia is derived from the Greek words “Thalassa”, meaning sea, and “Phobos”, meaning fear. Thalassophobia is an intense fear of large water bodies like oceans, seas, lakes etc. Some people with thalassophobia may deal with a little anxiety about the ocean or lake, but others have intense anxiety about the sea which may significantly impact their lives. If it is affecting an individual’s life, then a person may suspect they have thalassophobia.
Thalassophobia is not the same as aquaphobia, a general fear of water, as it specifically involves the fear of deep sea or large bodies of water. A person with aquaphobia may face a fear of drinking water, showering, or being near any type of water.
Prevalence
It is unknown how common thalassophobia is but according to research, thalassophobia varies greatly in severity and frequency among various populations, and many people may not even be aware that they have a mild case of the phobia.
Causes of thalassophobia
Like other phobias, thalassophobia can arise from a variety of causes. It is a result of a combination of environmental and social factors.
Environmental factors
Personal experiences and trauma
This fear may develop due to some traumatic experience you experience near the sea or large water body while swimming or maybe due to some other reasons connecting your trauma to large bodies of water.
Upbringing
This may also occur because of observing parents or other adults having the fear of deep water, or due to hearing stories of water accidents from various sources like the media.
Genetic factors
Inherited from parents
This fear may also develop due to evolution and genetics. It may be inherited from ancestors having a fear of deep water.
Personality trait
Thalassophobia may develop in a person who has an anxious, negative or sensitive personality.
Biological factors
If your brain has any dysfunction in processing the fear, you will have a higher chance of getting thalassophobia or any other type of phobia.
Symptoms of thalassophobia
Physical symptoms
People with thalassophobia may experience the following physical symptoms:
- Dizziness
- Nausea
- Rapid heart rate
- Shortness of breath
- Sweating
- Panic attacks near large water bodies
Emotional symptoms
Emotional symptoms of individuals who have thalassophobia include:
- Being Overwhelmed
- Feelings of anxiety
- Feeling detached from the situation
- Having a sense of imminent doom
- Needing to escape
In extreme situations, merely thinking about the ocean or other deep-water bodies may trigger these symptoms, and may lead to severe panic attacks. People with thalassophobia may avoid moving toward large water bodies to avoid any situation that might trigger the symptoms.
Diagnosis
According to the American Psychiatric Association "Diagnostic and Statistical Manual of Mental Disorders" (DSM-5), an internationally used guide for the evaluation and diagnosis of mental disorders, the following criteria must be met for the diagnosis of thalassophobia:
- The fear of deep water must be excessive, persistent, and unreasonable
- They must feel this fear every time they are exposed to deep or vast water
- The individual always avoids open bodies of water or endures them with intense fear
- The fear of large bodies of water interferes with their normal functioning
- The person must have experienced this fear for more than six months
Treatment
Cognitive-behavioral therapy (CBT)
Cognitive behavioural therapy (CBT) is a type of talk therapy which helps a person challenge harmful thoughts and beliefs to reduce anxiety. For example, in a CBT session for thalassophobia, the therapist may expose you to a large body of water and guide you as you journal about your thoughts throughout the day, record your feelings about your thoughts, and observe their physical and emotional changes. This kind of therapy helps the person to change their responses when their phobia is triggered, and reduce their anxiety.
Medications
The majority of thalassophobia patients find that therapy helps them completely resolve or minimise their symptoms, but some patients may need to combine therapy with medication in order to effectively treat their symptoms. While medication cannot completely cure phobias like thalassophobia, it can help lessen anxiety and fear symptoms. SSRIs, or selective serotonin reuptake inhibitors, are a class of antidepressants that are used to minimise the symptoms of anxiety and depression. Other common medications used for treating thalassophobia include beta blockers and benzodiazepines. Benzodiazepines should be prescribed only when other therapeutic or medicinal options are not working because these medications are sedative and addicting.
Exposure therapy
This is the process of simulating interaction with a specific object or scenario using technology. In exposure therapy, a patient is brought up close to the objects or circumstances that frighten them. This contact can occasionally be imagined or simulated. The goal might be to demonstrate that something is not as dangerous as a person thinks it is. Exposure therapy can boost a person's self-assurance in their capacity to handle the situation they are afraid of. In safe, supervised settings, a therapist assists a patient in facing their fear during exposure therapy. This can be performed in several ways:
- In vivo exposure: This technique involves direct contact with the triggered phobia
- Imaginal exposure: In this technique, the fearful object or circumstance is thoroughly imagined by the individual. During these sessions, a thalassophobe may discuss or think about the ocean
- Virtual reality exposure: This is the process of simulating interaction with a specific object or scenario through technology. When it is not feasible to attempt in vivo exposure, therapists may employ this method
Coping strategies and prevention
Dealing with thalassophobia is difficult, but you can prevent it by employing healthy coping mechanisms that help you to cope with and ease your fears.
Breathing exercises
When anxiety begins to rise, try to exhale and inhale long, slow, and deep. Breathing exercises can help to stop hyperventilation and make you calm in a few minutes.
Meditation
Meditation works by training the brain. Long-term practice of medication may help to reduce anxiety levels over the long term. It helps to reduce the activation of the amygdala: when a person faces any negative situation, the activation of the amygdala detects the threats and fears rapidly and involves fight, flight, and freeze response.
Visualisation techniques
You can practice facing your fears by using your imagination as a useful tool. When you have thalassophobia, you would picture yourself in specific deep-water scenarios and your ability to handle them. For example, you could attempt the following steps:
- Imagine yourself on a beach with shallow water
- Inhale deeply and visualise what it would be like to be fearless
- Proceed to "walk" in the ocean at a slower pace. You may visualise yourself donning a life jacket
- Imagine yourself lying on your back and floating fearlessly
If using a visualisation technique on your own seems overwhelming right now, think about getting advice from your therapist, if you have one, or get in touch with a reliable source.
FAQs
How do I know if I have thalassophobia?
Before receiving a formal diagnosis from a medical professional, there are signs that may indicate whether you have thalassophobia. The primary sign is the fear of deep, dark waters and what might be hidden beneath the surface.
What can trigger thalassophobia?
Thalassophobia can be triggered by a variety of stimuli, including thinking about or encountering the ocean, lakes, boats, swimming, scuba diving, submarines, marine life, or anything depicted in pictures or movies. Some people might be terrified of the ocean's emptiness rather than what's inside.
Is thalassophobia normal?
Most people have a "healthy" phobia of the sea. The ocean is, after all, vast, dark, and uncharted territory. Someone feels at ease jumping off a boat several miles offshore, but these are a rare breed. However, thalassophobia is an irrational and extreme fear of any deep body of water.
Is there a cure for thalassophobia?
Therapy is an effective way to treat thalassophobia. The standard course of treatment entails introducing the triggering stimulus gradually.
Summary
It's crucial to keep in mind to treat yourself with kindness when attempting to manage your thalassophobia. There are many people who have experienced similar intense feelings of anxiety, even though they may not share their exact fear.
Specific phobias are quite common. To overcome your fears, give yourself the time and resources you require. If you need assistance controlling your anxiety, don't hesitate to consult a physician or counsellor.
References
- Mahdavi Fashtami S, Darvishpour A. Fear of drowning (thalassophobia) and its coping strategies in nurses working in public hospitals in Eastern Guilan. J Inj Violence Res [Internet]. 2022 [cited 2024 Sep 28]; 14(2 Suppl 1):Paper No. 8. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9115833/.
- Bulley A, Miloyan B, Brilot B, Gullo MJ, Suddendorf T. An evolutionary perspective on the co-occurrence of social anxiety disorder and alcohol use disorder. J Affect Disord [Internet]. 2016 [cited 2024 Sep 28]; 196:62–70. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5214659/.
- Lionel. What is Thalassophobia? Can I still dive with this fear? | Sairee Cottage. Sairee Cottage Diving Koh Tao [Internet]. 2019 [cited 2024 Sep 28]. Available from: https://www.saireecottagediving.com/what-is-thalassophobia/.

