In shallow, high-intertidal pools covered with sand
Epiphyte on Cladostephus spongiosus
Epiphyte over Cladostephus spongiosus, close to Asparagopsis armata (Falkenbergia stage) and Champia parvula?
From a crevice.
Edit 01/10/2024: The microscopic image confirms it's D. polypodioides and not D. lucida
Upper intertidal, facing the south