The circle emerges somewhere in the stones and closes in a new place.
I was on the beach just before sunrise. I had actually hoped to find a white beach without a footprint. Instead, everything was full of algae. And so I used what I found.
Invasiv algae "Rugulopterix Okamurae"
Unfortunately, this type of algae is not endemic to these waters and threatens the entire ecosystem. It is an invasive algae that was ""brought in"" from Asia via the ballast tanks of ships in 2018 and is spreading rapidly. It partially covers the entire seabed in the Strait of Gibraltar, displacing all endemic species.
Just a few hours later ... the mandala was gone again. But the algae will stay...
