Furbellow

Overview

Saccorhiza polyschides, commonly known as Furbelows, is a large, fast-growing brown alga recognized as the largest seaweed species in Europe. As an opportunistic annual, it frequently colonizes disturbed rocky areas, often replacing perennial kelp species after storm events or environmental shifts.

Appearance

This species is easily identified by its massive, bulbous, and warty holdfast, which resembles a sea hedgehog. The stipe is distinctively flattened, leathery, and rigid, featuring conspicuously frilled, wavy margins at the base that help dissipate wave energy. The large, digitate frond is divided into several flat, ribbon-like lobes and lacks a midrib, which helps distinguish it from similar kelp species like Alaria esculenta.

Distribution & habitat

Furbelows are found along the European coastline, ranging from Norway in the north to the Mediterranean and North Africa in the south. It typically inhabits the sublittoral zone, growing from the extreme low water mark down to depths of approximately 35 meters. It prefers hard substrates such as bedrock, boulders, and cobbles, where it can form dense stands in areas with moderate to strong currents.