Laminaria digitata is a tough, leathery, aphotic amber seaweed that grows to two or three meters. The holdfast which anchors it to the bedrock is conical and has a amount of overextension root-like protrusions alleged rhizoids. The stipe or axis is adjustable and egg-shaped in cantankerous section. The brand is ample and shaped like the approach of a duke with a amount of added or beneath approved finger-like segments. This seaweed can be acclaimed from the rather agnate Laminaria hyperborea by getting darker in blush and accepting a beneath stipe that does not calmly breeze if bent.
Laminaria digitata occurs in the arctic west Atlantic from Greenland south to Cape Cod and in the arctic east Atlantic from arctic Russian and Iceland south to France. It is accepted annular the coasts of the British Isles except for abundant of the east bank of England.
Laminaria digitata is begin mostly on apparent sites on shores in the lower bank area it may anatomy all-encompassing meadows and can be the ascendant algal species. It has a adequately top built-in advance amount compared to added algae, 5.5% per day, and a accustomed accommodation of about 40 kg wet weight per aboveboard meter. It may ability lengths of about 4 m. It overlaps to a baby amount in administration with Fucus serratus and Alaria esculenta. It is awful affected to agriculture by sea urchins, a part of added species. It has low and top ablaze limitation ethics of about 5 and 70 W per aboveboard beat respectively. Its administration is aswell bound by salinity, beachcomber exposure, temperature, aridity and accepted stress.

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