Spirulina algae settling to the bottom of the flask. The deeper the green color the older the cells. This specimen was used to make new young cultures for future inoculation and then eventually harvest.
My entry for the #animalphotography contest by 
Spirulina algae settling to the bottom of the flask. The deeper the green color the older the cells. This specimen was used to make new young cultures for future inoculation and then eventually harvest.
My entry for the #animalphotography contest by