Image width ca. It lives on the upper shore below the zone of Pelvetia canaliculata and above Fucus vesiculosus and Ascophyllum nodosum . It grows up to 40cm long, without air baldders and lives for up to 4 years. The species can tolerate a high level of desiccation.
Fronds have a characteristic ridge along the egde of the receptacles.
White, N., 2000. Fucus spiralis , Spiral wrack.