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Do you or someone you know fear the sea or large bodies of water? We all have fears, but we can usually manage them. However, a phobia is an extreme fear that may require help to overcome. Here, we will explain thalassophobia and how to seek help.

What is thalassophobia?

Thalassophobia is an intense and often irrational fear of the sea or large bodies of water. This fear can range from the sea itself to its depth, waves, distance from land and the unknown creatures that may be below the surface.

People with thalassophobia may experience anxiety at the thought of being in or near large bodies of water, and even pictures or movies depicting the sea can trigger anxiety reactions. It is a treatable condition, so help is available.

Why do people get thalassophobia?

The causes of thalassophobia are often a combination of several factors. Past negative experiences with water, such as near drowning or other traumatic events, can play a major role in the development of this phobia.

Observing fear or anxiety of the sea in parents or relatives can also contribute to a person developing thalassophobia, as the fear can be learned through observation. For some, the underlying cause may be linked to biological or genetic factors that make them more prone to anxiety disorders in general. In addition, media depictions of the sea as a dangerous and unknown place can reinforce and create a deeper fear of the sea.

A fascination with the unknown and the potential dangers lurking beneath the surface, such as sea creatures or being stranded far from land, can also contribute to developing thalassophobia. This phobia is complex, and each person’s experience is unique, meaning that the causes of thalassophobia can vary between individuals.

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How common are phobias?

According to research in the field, approximately 8-12% of the population suffer from one or more phobias in their lifetime. These can range from common phobias such as fear of heights and social phobia to lesser-known ones such as ‘phobia of holes’ (trypophobia).

Symptoms of thalassophobia

The symptoms of thalassophobia can manifest themselves both physically and emotionally, affecting the individual in different ways. People suffering from this phobia may experience:

  • Intense anxiety or panic When thinking about the sea, seeing the sea, or when in or near large bodies of water. This anxiety can also be triggered by thinking about swimming or sailing.
  • Physical symptoms: Heart palpitations, sweating, trembling, shortness of breath, and sometimes dizziness or nausea. In some cases, these symptoms can escalate to a full-blown panic attack.
  • Avoidance behaviour: The individual actively avoids situations involving the sea or large bodies of water. This may include avoiding travel to coastal areas, swimming, or participating in water-based activities.
  • Feelings of helplessness or powerlessness: When thinking about or being confronted with the sea, it can affect the individual’s quality of life and limit their ability to engage in certain activities or travel.
  • Excessive fear of drowning or of what might be under the water’s surface, even if the risk is objectively low or the situation is controlled.

These symptoms can be particularly pronounced when there is no apparent danger, which is a sign that the fear is irrational, a characteristic of phobias. The symptoms can vary in severity from mild to severe problems. Thalassophobia can lead to significant stress and anxiety, which can affect social life, relationships and everyday functions.


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How can thalassophobia be treated?

Treatment for thalassophobia focuses on processing anxiety and managing the phobia effectively. Cognitive Behavioural Therapy (CBT) and exposure therapy are essential methods, with CBT helping to challenge negative thoughts about the sea and exposure therapy gradually acclimating the individual to water through controlled situations.

Relaxation techniques and mindfulness can be used to manage anxiety in the moment. Medication can be considered for severe anxiety. Self-help and can provide additional support. Professional help is essential to create a customized treatment plan and effectively overcome the fear of the sea.


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12 FAQs about Thalassophobia

What is a phobia?

A phobia is an irrational and intense fear or anxiety about a particular object, situation or activity. This fear is usually long-lasting and can be very limiting in daily life.

How are phobias different from ordinary fears?

Ordinary fear is a natural reaction to an actual danger, while a phobia is an exaggerated fear with no rational explanation. Phobias can be triggered even when there is no actual risk.

Are phobias common?

Yes, phobias are one of the most common forms of mental health problems. It is estimated that a significant proportion of the population suffers from at least one form of phobia.

What is thalassophobia?

Thalassophobia is an intense and often irrational fear of the sea or large bodies of water. This fear can include everything from the sea to its depth, waves, distance from land and the unknown creatures below the surface.

What causes thalassophobia?

The causes of thalassophobia are often a combination of genetic factors, personal experiences (such as trauma or drowning risk), and environmental influences.

Is it possible to get rid of a phobia?

Yes, with the proper treatment and support, phobic symptoms can be treated. However, it usually requires the help of a licensed psychologist or therapist.

How does treatment work?

Treatment can vary but often involves Cognitive Behavioural Therapy (CBT) with exposure and medication if necessary.

Can phobias lead to other mental health problems?

Yes, untreated phobias can lead to other problems, such as depression or other anxiety disorders, if many things related to the phobia are avoided.

What is Cognitive Behavioural Therapy?

CBT is an active evidence-based treatment method that works with thoughts, feelings and behaviours in different situations to improve quality of life and overcome specific symptoms.

What is exposure in treatment?

Exposure is a tool in CBT where you gradually approach what you are afraid of systematically and safely together with a psychologist or therapist.

I have started to avoid things because I fear the sea; what can I do?

You can seek treatment if you fear the sea or large bodies of water that affect or limit your life. There is practical help available.

Where can I seek help for my phobia?

If you have a phobia, we recommend that you contact a licensed psychologist or therapist. You can book a first appointment with one of our therapists here at Lavendla. We make the hard things more accessible.

Treating thalassophobia with Cognitive Behavioural Therapy

This is what treatment for thalassophobia can look like, and it can be overwhelming, but remember that you are not alone in overcoming your fear. There is help available, and here is an idea of what treatment might look like:

Understanding and assessment

The first step is to understand that you have a phobia and that it is okay to seek help for it. A licensed psychologist can help you assess your situation and understand what is causing your fear. You may also be asked to complete assessment forms.

Psychoeducation and objectives

You will learn about your phobia and how it affects you both physically and mentally. Understanding what happens in your body, thoughts, and feelings when the fear occurs is essential. Goals are also set for treatment.

Tools to change behaviours and patterns

This works on identifying and changing thinking patterns linked to fear. This will help you develop a more nuanced picture and increase your ability to manage the phobia. Exposure therapy can be scary, but it is an effective way to face your fears gradually. Together with your therapist, you will explore situations that trigger your phobia and learn how to deal with them. You will also be given homework to practice between sessions.

Medication (if needed)

In some cases, doctors may suggest medication to help with anxiety symptoms. This is something you and your doctor can discuss if appropriate.

Follow up and evaluate your progress

Your psychologist will support you throughout the process. At the end of the treatment, you will also receive a plan to continue practising and maintain your progress over time.

Feel free to book a first session with a psychologist or therapist to see how we can help you.


Written by Samantha Pieterse

Sr. Samantha Pieterse is a registered psychiatric nurse who is deeply committed to mental health and well-being. Samantha brings a unique and valuable perspective to her role as an editor for Lavendla South Africa. She has worked in Government and Private mental healthcare institutions in Gauteng and her expertise ensures that the articles on our website are accurate and accessible. Samantha is dedicated to enhancing mental health awareness and education in South Africa.