Furcellaria (Furcellaria lumbricalis), which is commonly found in mixed populations with Irish Moss, usually grows attached to rocks and stones in shallow subtidal areas of depths up to 20 meters, in sheltered to moderately covered coastlines. It can also be found growing in rockpools and be found on the shoreline after strong winds. Furcellaria is most commonly used in the food industry as a source of furcellaran, similar to carrageenan and used as a gelling and thickening agent. Fucellaran is used in food products including jams and other preservatives, fruit juices, meat and fish preparations as well as brewing beer. Furcellaria ranges in color from reddish-brown to brownish black. The seaplant can grow up to 30cm in length.
The seaplant industry is centered in Prince County, where furcellaria is harvested. Furcellaria is mainly harvested by drag rakes towed behind boats. The furcellaria season generally opens prior to the Irish Moss season which begins mid June.