Summer often brings images of beaches, lakes, and time spent near the water. For some people, these moments feel relaxing and joyful. For others, being around water can stir up intense discomfort, fear, or anxiety. If you’ve ever felt uneasy looking out at the open ocean or imagining what might lie beneath the surface, this may be a sign of thalassophobia.

Understanding what thalassophobia is, where it might come from, and how people can cope with it can help people make sense of their experiences. Whether you’re simply curious or looking for ways to feel more at ease around water, this blog offers information to help you better understand the connection between the fear of water and mental health.

What is thalassophobia?

Thalassophobia is a specific phobia that involves a deep fear of large bodies of water, such as oceans, lakes, or even deep pools. It’s also commonly referred to as an ocean phobia or a fear of the ocean.

For some, the fear may center around the vastness and depth of water. For others, it may be tied to what could be hidden beneath the surface. People may fear the unknown, unseen elements that feel impossible to predict or control.

This fear can show up in different ways, such as:

  • A fear of deep water
  • A fear of murky water where visibility is limited
  • A fear of dark water
  • Even a fear of shallow water, which may be tied to worries about injury or loss of control

To be diagnosed with a specific phobia like thalassophobia, the fear typically persists over time and causes noticeable distress or interference with daily life.

Some people also experience a related but more specific fear known as megalothalassophobia, which involves anxiety about large sea creatures or massive underwater objects.

It’s important to note that thalassophobia is different from aquaphobia, which is a more general fear of water. Thalassophobia tends to be more specific to large, deep, or open bodies of water.

How common is thalassophobia?

While exact numbers can be difficult to pinpoint, fear of large bodies of water is not uncommon. Some studies have suggested that up to 25% of people may experience some level of water-related fear or anxiety, even if it doesn’t meet the criteria for a diagnosable phobia.

While not everyone experiences a fear of water or oceans at the same intensity, some people relate to at least some discomfort around deep or unfamiliar water. For some, the fear may be mild and manageable. For others, it can significantly impact daily life. This can be especially true during seasons like summer, when water-based activities are more common.

Signs of thalassophobia

The intensity of thalassophobia symptoms or signs may vary depending on the person and the situation.

Examples of signs of fear of oceans or water include:

  • Intense fear or anxiety when near or thinking about large bodies of water
  • A feeling of impending doom, even when there’s no immediate danger
  • Avoiding beaches, lakes, cruises, swimming, or other water-related activities
  • Intrusive thoughts about drowning, being pulled under, or encountering sea creatures
  • Strong reactions to images or videos of the ocean
  • A fear of swimming, especially in open or deep water
  • Anticipatory anxiety before events that involve water (like vacations or trips)
  • Physical symptoms such as sweating, rapid heartbeat, nausea, or dizziness

With thalassophobia, the reaction may feel out of proportion to the actual risk or situation. For example, someone may have a panic attack from simply looking at a picture of the ocean or hearing sounds of the ocean.

Causes of thalassophobia

There isn’t one single reason why thalassophobia may develop. Like many phobias, fear of the ocean can develop through a mix of experiences, such as:

  • Past negative experiences involving water or swimming
  • Hearing about accidents, drownings, or natural disasters (like hurricanes or tsunamis)
  • Learning fears from family members or other influences
  • Having a generally higher sensitivity to anxiety
  • Exposure to vivid media portrayals of the ocean or sea life

Thalassophobia may also be tied to the fear of the unknown. When the mind can’t predict what might happen, it may fill in the gaps with worst-case scenarios.

Coping with the fear of water

While thalassophobia can feel overwhelming, there are coping skills that can help people learn to manage and reduce their fear over time. These approaches focus on reducing stress and creating a sense of control.

Here are some examples of coping strategies for thalassophobia:

1. Gradual and controlled exposure

This involves exposure introduced slowly and intentionally. This might look like:

  • Sitting near a beach without going into the water
  • Progressing to walking along the shoreline
  • Eventually stepping into shallow water at a comfortable pace

The aim of gradual exposure is to help desensitize fear responses by allowing the brain to relearn that the situation is safe.

2. Relaxation techniques

Practices that aim to calm the nervous system, such as relaxation or breathing techniques, may help reduce physical symptoms of anxiety. These include:

  • Deep breathing exercises (such as diaphragmatic breathing)
  • Progressive muscle relaxation
  • Guided relaxation exercises

3. Mindfulness practices

Mindfulness focuses on staying present rather than getting caught in fearful thoughts. Techniques may include:

  • Observing sensations in the body without judgment
  • Practicing mindfulness meditation
  • Grounding exercises that focus on the environment around you

4. Journaling

For some people, writing about thoughts and feelings in a journal can help identify patterns and triggers. It may also provide insight into triggers and where fears may have originated.

5. Education

Learning about water safety, buoyancy, marine environments, and realistic risks can sometimes reduce irrational fears by replacing unknowns with facts.

6. Virtual reality exposure

Emerging tools like virtual reality for phobias (VR) are being explored as a way to simulate water environments in a controlled setting. The goal is to allow people to expand their window of tolerance gradually.

7. Leaning on support systems

Spending time near water with trusted friends or family members can help create a sense of safety, support, and reassurance.

Therapy for thalassophobia

Therapy can offer support for thalassophobia. Mental health professionals can help people explore their fears in a safe and supportive way.

Examples of how therapy may help with fear of water or oceans include:

  • Gradually desensitizing individuals to water-related fears
  • Identifying and reframing anxious or unhelpful thought patterns
  • Developing personalized coping strategies
  • Learning relaxation techniques and grounding exercises
  • Exploring where the fear of oceans and water may have originated
  • Safely practicing exposure

Therapists specializing in phobias may use a variety of evidence-based approaches, including:

  • Cognitive Behavioral Therapy (CBT): CBT focuses on identifying and changing thought patterns that may be contributing to fear or anxiety.
  • Exposure Therapy: Exposure Therapy involves gradual exposure to feared situations.
  • Trauma-Focused CBT (TF-CBT): TF-CBT may be used if the fear of oceans is connected to a past traumatic experience with water.
  • Eye Movement Desensitization and Reprocessing (EMDR): EMDR may also be helpful if the fear is connected to a past traumatic experience.

 Takeaway

Thalassophobia is more than just disliking water; it’s a phobia that may connect with fear of uncertainty, past experiences, and the brain’s natural instinct to want to stay safe. Whether it shows up as avoidance of water or a strong reaction to being around water, it can influence how someone experiences environments.

Understanding this fear can be an important step toward making sense of your emotions and experiences. With tools, support, and information, people can find ways to navigate their relationship with water in a way that feels more manageable and less overwhelming.

If learning about thalassophobia has sparked curiosity about your own experiences, exploring those thoughts with a licensed therapist for phobias can be a helpful next step. You can browse therapists near you at findmytherapist.com and learn more about support that fits your needs.