Water Calendar 2025 | Water Calendar

January 2025 – Self-organization

Self-organizing sand-water rolls — Sand-water rolls self-organizing in the receding stream. Agadir, Morocco. Photo: Lasse Johansson

Self-organizing, seemingly out of nothing, the sand-water rolls appear. Where did they come from? The moment before, when the incoming stream reached its highest level and turned, there was only a flat surface of murky water.

Self-organization means the spontaneous formation of a macroscopic structure, an order for free, as it were, emerging when the effects of the individuals, e.g. the movement of water molecules, start to interlock and add up, forming a new complexity. When the conditions are right, self-organization occurs, spontaneously, like a vortex forming in a bath tub.

October 2025 – The Mysteries of Fog

Mist from the seaside clearing up in the morning. Orust island. Sweden. Photo: Lasse Johansson

Morning mist is rolling in from the shore, the remnants of a rainy summer night. Elusive, yet being so close that one can nearly touch it. The sun finally breaks through, clearing up the mist into vapour, and it is gone, the remembrance of the night’s thunderstorm. Mist, the symbol of the unclear, the undiscovered, out of which discovery is born. Does it still hold any mysteries?