Ascophyllum nodosum

Knotted wrack
Knotentang
Knotswier
Goémon noir
Alga nudosa

Distribution

The temperate Atlantic

Substrate and environment

The species is generally attached to a reef
The alga forms carpets on its substrate
The species can be found between 0 and 15 Meters.
Very common species.

General characteristics of the species

Height of the alga : 200 cm

Relationship with humans

The species can be eaten but is of no particular culinary interest
The species is exploited in the following sector(s) :
- - Fishing or commercial aquiculture for food
- - Chemistry/pharmacy

The species can be confused with other species of similar appearance!