Nature is all about the flow of energy.
Bioluminiscence exemplifies this beautifully.
Microalgae capture the energy of sunlight during
the day. They use it to drive all processes of life. At
night, they dispose of the excess energy
captured , again as light.
The eternal flow of energy in Nature is seen here
in the mathematical perfect Acanthus that serves
as a safe place for the microbes that give back the
sunlight to its admirers.