The Sea of Tranquillity

For the sake of science, marine biologist Wallace J. Nichols plunged into the ocean wearing a swim cap plugged into an EEG (electroencephalogram) scanning apparatus. His dive sampled real-time data from his cap at a rate of 256 times per second, showing which areas of his brain were being stimulated. His scan provided proof that immersing oneself in the ocean was a natural enhancer for neurotransmitters associated with feelings of calm, gratitude and compassion. Interacting with water increased levels of dopamine, known to enhance memory, movement and pleasure; serotonin (aka the happiness hormone); and oxytocin (often referred to as the love hormone). There was also a significant reduction in cortisol, a steroid hormone that plays an important role in the body's response to stress.

One of the 21st century's biggest breakthroughs in the field of neurology is the revelation that the brain is not fixed but rather an ever-evolving organ, reorganising and restructuring itself on a cellular level. It has the ability to remodel itself in accordance with the sensory information it gathers – a phenomenon known as neuroplasticity. The more defined neurological pathways, such as our habits, are formed depending on what we pay attention to. The person we believe we are is partly shaped by which neurotransmitter is fired up in our brain most frequently.

But how does this apply to the human relationship with the sea? Well, as Nichols' “blue mind theory” suggests, our brain chemistry can be altered simply by watching waves crash into one another in the ocean. Whether you dip your feet in a creek or stand under a waterfall, when the brain makes contact with water it automatically reaches a calmer, meditative state. A stream of feel-good chemicals is released, elevating you into higher connectivity with yourself, fellow humans and the planet. This helps to form new, good neural networks and is a simple way for you to consciously rewire your brain by allowing your mind to drift alongside water.

Our world is a water world. Our bodies are 78 per cent water-based. There is a reason why ancient cultures used water in their spiritual practices and as a tool for healing. For example, during the 15th century the Ottoman Empire built sijahanes, which were mental-health facilities that nursed patients back to health with water therapy and music. In today's world, where being busy is worn as a badge of honour and depression is a global problem, we need to call upon the healing powers of water.

I see water as a kind of free medicine. Thankfully mine is a 15-minute walk from my house on the straits of the Bosphorus. Istanbul is congested, loud, hyperactive, taking its toll on my nerves, but gazing upon the Bosphorus makes it all worth it. My all-time favourite water therapy is a ferry ride with a chorus of seagulls as background music. It drains all the modern city blues out of me. This summer, as you go for a swim or gaze upon your favourite body of water, try to look at it from this refreshed perspective – and accept its healing gift.