Scattered dark patches of Porphyra umbilicalis in the upper intertidal zone at Schoodic Point (Maine), on a calm, sunny day that will expose this ubiquitous North Atlantic red alga to high light and drying stresses. (Susan Brawley)
Scattered dark patches of Porphyra umbilicalis in the upper intertidal zone at Schoodic Point (Maine), on a calm, sunny day that will expose this ubiquitous North Atlantic red alga to high light and drying stresses. (Susan Brawley)