Another holiday in Northern Denmark and again our Danish friend pointed out: “Today there could be MORILD – Meeresleuchten – marine phosphorescence this night".
The first night we were unlucky. The second night it was there and the third night we were overwhelmed by what we saw.
We went swimming in the calm sea and with every movement we were surrounded by thousands of green sparks which illuminated the sea around us like glowworms.
We were told that you can only experience it in the dark when it is warm / mild and when the sea is calm.
What an experience!!!!!
Here the explanation for this phenomenon:
Marine phosphorescence happens when there is a contact stimulus. It happens when there is a certain amount of micro-organism in the water and belongs to the phenomenon of bioluminescence. It is the production and emission of light by a living organism.
Luciferin reacts with oxygen to create light.
Ninety percent of deep-sea marine life are estimated to produce bioluminescence in one form or another. Most marine light-emission belongs in the blue and green light spectrum, the wavelengths that can transmit through the seawater most easily.