Dictyota spiralis

Dictyota spiralis is a species of brown alga found in the temperate eastern Atlantic Ocean and the Mediterranean Sea.

Description
The thallus of Dictyota spiralis is a yellowish-brown colour, sometimes with a greenish iridescent tip. It forms clumps of membranous, flattened, ribbon-like fronds with few branches, up to 15 cm long and 4 mm wide. The clump is anchored to the seabed by stolons.