Experiences with nitrogen narcosis

Why we should talk about nitrogen narcosis

Studies can show that attention, reaction time, memory, or self-assessment can be altered under pressure. But they only offer a limited perspective on how it actually feels for divers.

That is exactly what this page is about: descriptions, memories, images, and patterns. Not as hero stories. Not as a test of courage. But as an attempt to better understand how people experience narcosis — and how they process it later.

Two old voices from the deep

The fact that narcosis is described so differently is nothing new. Even in classic reports, one finds two very different images: the seduction of the deep — and the moment when it was clearly too much.

The good old nitrogen narcosis. For some a threat, for others a wonderful moment. Sometimes that changes from one day to the next.

The words themselves reveal a lot. “Nitrogen narcosis” sounds medical and dangerous. “Tiefenrausch” sounds softer. And “l’ivresse des grandes profondeurs” — the intoxication of the great depths — sounds almost as if one should find it romantic.

These differences in language match the differences in experience. Some people describe narcosis as unpleasant, unsettling, or threatening. Others speak of calm, lightness, beauty, or a feeling as if everything were moving a bit further away.

When the depth becomes beautiful

Nitrogen narcosis — especially in the beginning when you are still inexperienced — can sometimes start off as frightening. You no longer feel quite normal. At the same time, you are underwater anyway, in an environment that is already foreign enough at the start.

With experience, this can change. Being underwater becomes more familiar. Movements, buoyancy, equipment, and procedures require less attention. Then, even a mild case of narcosis can seem less threatening. You notice: something is setting in. But you don’t immediately feel like you’re losing control.

For some, this is exactly where the appeal of narcosis lies: that gentle onset, the peace, the beauty, the feeling of still being there — but somehow different.

Nevertheless, it remains important: pleasant does not mean harmless. Even an enjoyable narcosis is an altered state. And especially when it feels particularly light, particularly calm, or particularly beautiful, it is worth asking whether you are still making decisions as well as you would at the surface.

When the mood shifts

Then there is the nitrogen narcosis which becomes unpleasant. You notice that breathing feels heavier. Perception becomes blurred. The surroundings suddenly no longer seem beautiful, but threatening. Perhaps the way up feels very long. Perhaps sounds are added—tones, music, singing. Perhaps there is just this clear feeling: I want to get out of here.

At that point, at the latest, the decision is simple: go shallower. Don’t stay a little longer. Don’t test if it gets better. Don’t dive further into the state out of curiosity.

Reports of the so-called “Wah-Wah” belong to the extreme end of this spectrum. They describe moments in which perception breaks down massively. Anyone who experiences something like this and can tell the story later was lucky — and was very likely significantly too deep on air.

What we can learn from experience reports

Studies help us understand which functions can be impaired under pressure. But they say very little about the words people find for this experience later.

Was it euphoria? Calm? Fear? Tunnel vision? Slowing down? A strange confidence? An altered sense of time? The impression that colors, sounds, or distances were different?

It is precisely these descriptions that are interesting. Not because every single story proves how narcosis works, but because patterns may emerge across many individual reports: typical forms, typical turning points, typical warning signs — and perhaps also typical misunderstandings.

We are collecting your stories

Have you experienced nitrogen narcosis yourself? Then tell us about it.

It doesn’t have to be a spectacular story. It doesn’t have to be a dramatic incident. Often, the unspectacular, honest descriptions are particularly valuable: because they show how narcosis begins, how it is perceived — or why it might not be noticed in time.

We’re mainly collecting detailed reports. You can already write down what you experienced. A questionnaire will be available here soon so you can share your experiences in a structured way. Until then, feel free to just message us 🙂